diff --git a/Content.Client/Administration/Systems/AdminSystem.Menu.cs b/Content.Client/Administration/Systems/AdminSystem.Menu.cs
index c10cadd48a..93b6770141 100644
--- a/Content.Client/Administration/Systems/AdminSystem.Menu.cs
+++ b/Content.Client/Administration/Systems/AdminSystem.Menu.cs
@@ -24,10 +24,6 @@ namespace Content.Client.Administration.Systems
         [Dependency] private readonly IGameHud _gameHud = default!;
         [Dependency] private readonly IClientAdminManager _clientAdminManager = default!;
         [Dependency] private readonly IClientConGroupController _clientConGroupController = default!;
-        [Dependency] private readonly IOverlayManager _overlayManager = default!;
-        [Dependency] private readonly IResourceCache _resourceCache = default!;
-        [Dependency] private readonly IEntityManager _entityManager = default!;
-        [Dependency] private readonly EntityLookupSystem _entityLookup = default!;
         [Dependency] private readonly IClientConsoleHost _clientConsoleHost = default!;
 
         [Dependency] private readonly VerbSystem _verbSystem = default!;
diff --git a/Content.Client/Administration/Systems/AdminSystem.Overlay.cs b/Content.Client/Administration/Systems/AdminSystem.Overlay.cs
index 85611626d5..3502faf9e8 100644
--- a/Content.Client/Administration/Systems/AdminSystem.Overlay.cs
+++ b/Content.Client/Administration/Systems/AdminSystem.Overlay.cs
@@ -1,12 +1,16 @@
 using Content.Client.Administration.Managers;
 using Robust.Client.Graphics;
+using Robust.Client.ResourceManagement;
 
 namespace Content.Client.Administration.Systems
 {
     public sealed partial class AdminSystem
     {
+        [Dependency] private readonly IOverlayManager _overlayManager = default!;
+        [Dependency] private readonly IResourceCache _resourceCache = default!;
         [Dependency] private readonly IClientAdminManager _adminManager = default!;
         [Dependency] private readonly IEyeManager _eyeManager = default!;
+        [Dependency] private readonly EntityLookupSystem _entityLookup = default!;
 
         private AdminNameOverlay _adminNameOverlay = default!;
 
@@ -15,7 +19,7 @@ namespace Content.Client.Administration.Systems
 
         private void InitializeOverlay()
         {
-            _adminNameOverlay = new AdminNameOverlay(this, _entityManager, _eyeManager, _resourceCache, _entityLookup);
+            _adminNameOverlay = new AdminNameOverlay(this, EntityManager, _eyeManager, _resourceCache, _entityLookup);
             _adminManager.AdminStatusUpdated += OnAdminStatusUpdated;
         }
 
diff --git a/Content.Client/Administration/Systems/BwoinkSystem.cs b/Content.Client/Administration/Systems/BwoinkSystem.cs
index 351b42ae2b..be3e2c0f31 100644
--- a/Content.Client/Administration/Systems/BwoinkSystem.cs
+++ b/Content.Client/Administration/Systems/BwoinkSystem.cs
@@ -29,6 +29,9 @@ namespace Content.Client.Administration.Systems
 
         public bool IsOpen => (_adminWindow?.IsOpen ?? false) || (_plainWindow?.IsOpen ?? false);
 
+        public event Action? AdminReceivedAHelp;
+        public event Action? AdminOpenedAHelp;
+
         protected override void OnBwoinkTextMessage(BwoinkTextMessage message, EntitySessionEventArgs eventArgs)
         {
             base.OnBwoinkTextMessage(message, eventArgs);
@@ -52,8 +55,10 @@ namespace Content.Client.Administration.Systems
             {
                 _adminWindow?.OnBwoink(message.UserId);
 
-                if (_adminWindow?.IsOpen != true)
-                    _hud.SetInfoRed(true);
+                if (_adminWindow?.IsOpen == true)
+                    return;
+                AdminReceivedAHelp?.Invoke();
+                _hud.SetInfoRed(true);
             }
         }
 
@@ -117,6 +122,7 @@ namespace Content.Client.Administration.Systems
             }
 
             _hud.SetInfoRed(false);
+            AdminOpenedAHelp?.Invoke();
 
             if (_adminManager.HasFlag(AdminFlags.Adminhelp))
             {
@@ -149,4 +155,3 @@ namespace Content.Client.Administration.Systems
         }
     }
 }
-
diff --git a/Content.Client/Administration/UI/Tabs/AdminbusTab/AdminbusTab.xaml.cs b/Content.Client/Administration/UI/Tabs/AdminbusTab/AdminbusTab.xaml.cs
index 01d2fa97d5..e002b4a923 100644
--- a/Content.Client/Administration/UI/Tabs/AdminbusTab/AdminbusTab.xaml.cs
+++ b/Content.Client/Administration/UI/Tabs/AdminbusTab/AdminbusTab.xaml.cs
@@ -1,7 +1,6 @@
 using System.IO;
 using Content.Client.Administration.Commands;
 using Content.Client.Administration.Managers;
-using Content.Client.Sandbox;
 using Content.Client.UserInterface.Systems.DecalPlacer;
 using Content.Shared.Administration;
 using Robust.Client.AutoGenerated;
@@ -15,11 +14,19 @@ namespace Content.Client.Administration.UI.Tabs.AdminbusTab
     [GenerateTypedNameReferences]
     public sealed partial class AdminbusTab : Control
     {
+        private readonly EntitySpawningUIController _entitySpawningController;
+        private readonly TileSpawningUIController _tileSpawningController;
+        private readonly DecalPlacerUIController _decalPlacerController;
+
         public AdminbusTab()
         {
             RobustXamlLoader.Load(this);
             IoCManager.InjectDependencies(this);
 
+            _entitySpawningController = UserInterfaceManager.GetUIController<EntitySpawningUIController>();
+            _tileSpawningController = UserInterfaceManager.GetUIController<TileSpawningUIController>();
+            _decalPlacerController = UserInterfaceManager.GetUIController<DecalPlacerUIController>();
+
             var adminManager = IoCManager.Resolve<IClientAdminManager>();
 
             // For the SpawnEntitiesButton and SpawnTilesButton we need to do the press manually
@@ -39,17 +46,17 @@ namespace Content.Client.Administration.UI.Tabs.AdminbusTab
 
         private void SpawnEntitiesButtonOnPressed(BaseButton.ButtonEventArgs obj)
         {
-            IoCManager.Resolve<IUserInterfaceManager>().GetUIController<EntitySpawningUIController>().ToggleWindow();
+            _entitySpawningController.ToggleWindow();
         }
 
         private void SpawnTilesButtonOnOnPressed(BaseButton.ButtonEventArgs obj)
         {
-            IoCManager.Resolve<IUserInterfaceManager>().GetUIController<TileSpawningUIController>().ToggleWindow();
+            _tileSpawningController.ToggleWindow();
         }
 
         private void SpawnDecalsButtonOnPressed(BaseButton.ButtonEventArgs obj)
         {
-            IoCManager.Resolve<IUserInterfaceManager>().GetUIController<DecalPlacerUIController>().ToggleWindow();
+            _decalPlacerController.ToggleWindow();
         }
     }
 }
diff --git a/Content.Client/CharacterInfo/Components/CharacterInfoComponent.cs b/Content.Client/CharacterInfo/Components/CharacterInfoComponent.cs
index bc9e7b7368..01d3918438 100644
--- a/Content.Client/CharacterInfo/Components/CharacterInfoComponent.cs
+++ b/Content.Client/CharacterInfo/Components/CharacterInfoComponent.cs
@@ -1,12 +1,8 @@
 using Content.Client.CharacterInterface;
-using Content.Client.HUD.UI;
 using Content.Client.Stylesheets;
+using Content.Client.UserInterface.Controls;
 using Robust.Client.UserInterface;
 using Robust.Client.UserInterface.Controls;
-using Robust.Shared.GameObjects;
-using Robust.Shared.IoC;
-using Robust.Shared.Localization;
-using Robust.Shared.Maths;
 
 namespace Content.Client.CharacterInfo.Components
 {
@@ -72,7 +68,7 @@ namespace Content.Client.CharacterInfo.Components
                 };
                 AddChild(ObjectivesContainer);
 
-                AddChild(new Placeholder()
+                AddChild(new Placeholder
                 {
                     PlaceholderText = Loc.GetString("character-info-roles-antagonist-text")
                 });
diff --git a/Content.Client/Entry/EntryPoint.cs b/Content.Client/Entry/EntryPoint.cs
index cc71f8431d..6517eee3b0 100644
--- a/Content.Client/Entry/EntryPoint.cs
+++ b/Content.Client/Entry/EntryPoint.cs
@@ -1,6 +1,5 @@
 using Content.Client.Administration.Managers;
 using Content.Client.Changelog;
-using Content.Client.CharacterInterface;
 using Content.Client.Chat.Managers;
 using Content.Client.Options;
 using Content.Client.Eui;
@@ -31,9 +30,9 @@ using Content.Shared.Markers;
 using Robust.Client;
 using Robust.Client.Graphics;
 using Robust.Client.Input;
-using Robust.Client.Player;
 using Robust.Client.State;
 using Robust.Client.UserInterface;
+using Robust.Shared.Configuration;
 #if FULL_RELEASE
 using Robust.Shared;
 using Robust.Shared.Configuration;
@@ -41,65 +40,43 @@ using Robust.Shared.Configuration;
 using Robust.Shared.ContentPack;
 using Robust.Shared.Map;
 using Robust.Shared.Prototypes;
-using Robust.Shared.Timing;
 
 namespace Content.Client.Entry
 {
     public sealed class EntryPoint : GameClient
     {
-        [Dependency] private readonly IPlayerManager _playerManager = default!;
         [Dependency] private readonly IBaseClient _baseClient = default!;
         [Dependency] private readonly IGameController _gameController = default!;
         [Dependency] private readonly IStateManager _stateManager = default!;
-        [Dependency] private readonly IEntityManager _entityManager = default!;
+        [Dependency] private readonly IComponentFactory _componentFactory = default!;
+        [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
+        [Dependency] private readonly IClientAdminManager _adminManager = default!;
+        [Dependency] private readonly IParallaxManager _parallaxManager = default!;
+        [Dependency] private readonly IConfigurationManager _configManager = default!;
+        [Dependency] private readonly IStylesheetManager _stylesheetManager = default!;
+        [Dependency] private readonly IScreenshotHook _screenshotHook = default!;
+        [Dependency] private readonly ChangelogManager _changelogManager = default!;
+        [Dependency] private readonly RulesManager _rulesManager = default!;
+        [Dependency] private readonly ViewportManager _viewportManager = default!;
+        [Dependency] private readonly IUserInterfaceManager _userInterfaceManager = default!;
+        [Dependency] private readonly IInputManager _inputManager = default!;
+        [Dependency] private readonly IMapManager _mapManager = default!;
+        [Dependency] private readonly IOverlayManager _overlayManager = default!;
+        [Dependency] private readonly IChatManager _chatManager = default!;
+        [Dependency] private readonly IClientPreferencesManager _clientPreferencesManager = default!;
+        [Dependency] private readonly EuiManager _euiManager = default!;
+        [Dependency] private readonly IVoteManager _voteManager = default!;
+        [Dependency] private readonly IGamePrototypeLoadManager _gamePrototypeLoadManager = default!;
+        [Dependency] private readonly NetworkResourceManager _networkResources = default!;
+        [Dependency] private readonly GhostKickManager _ghostKick = default!;
+        [Dependency] private readonly ExtendedDisconnectInformationManager _extendedDisconnectInformation = default!;
+        [Dependency] private readonly PlayTimeTrackingManager _playTimeTracking = default!;
+        [Dependency] private readonly IGameHud _gameHud = default!;
 
         public const int NetBufferSizeOverride = 2;
 
         public override void Init()
         {
-            var factory = IoCManager.Resolve<IComponentFactory>();
-            var prototypes = IoCManager.Resolve<IPrototypeManager>();
-
-            factory.DoAutoRegistrations();
-            factory.IgnoreMissingComponents();
-
-            // Do not add to these, they are legacy.
-            factory.RegisterClass<SharedLatheComponent>();
-            factory.RegisterClass<SharedSpawnPointComponent>();
-            factory.RegisterClass<SharedReagentDispenserComponent>();
-            factory.RegisterClass<SharedGravityGeneratorComponent>();
-            factory.RegisterClass<SharedAMEControllerComponent>();
-            // Do not add to the above, they are legacy
-
-            prototypes.RegisterIgnore("accent");
-            prototypes.RegisterIgnore("material");
-            prototypes.RegisterIgnore("reaction"); //Chemical reactions only needed by server. Reactions checks are server-side.
-            prototypes.RegisterIgnore("gasReaction");
-            prototypes.RegisterIgnore("seed"); // Seeds prototypes are server-only.
-            prototypes.RegisterIgnore("barSign");
-            prototypes.RegisterIgnore("objective");
-            prototypes.RegisterIgnore("holiday");
-            prototypes.RegisterIgnore("aiFaction");
-            prototypes.RegisterIgnore("htnCompound");
-            prototypes.RegisterIgnore("htnPrimitive");
-            prototypes.RegisterIgnore("gameMap");
-            prototypes.RegisterIgnore("faction");
-            prototypes.RegisterIgnore("lobbyBackground");
-            prototypes.RegisterIgnore("advertisementsPack");
-            prototypes.RegisterIgnore("metabolizerType");
-            prototypes.RegisterIgnore("metabolismGroup");
-            prototypes.RegisterIgnore("salvageMap");
-            prototypes.RegisterIgnore("gamePreset");
-            prototypes.RegisterIgnore("gameRule");
-            prototypes.RegisterIgnore("worldSpell");
-            prototypes.RegisterIgnore("entitySpell");
-            prototypes.RegisterIgnore("instantSpell");
-            prototypes.RegisterIgnore("roundAnnouncement");
-            prototypes.RegisterIgnore("wireLayout");
-            prototypes.RegisterIgnore("alertLevels");
-            prototypes.RegisterIgnore("nukeopsRole");
-            prototypes.RegisterIgnore("flavor");
-
             ClientContentIoC.Register();
 
             foreach (var callback in TestingCallbacks)
@@ -109,19 +86,6 @@ namespace Content.Client.Entry
             }
 
             IoCManager.BuildGraph();
-            factory.GenerateNetIds();
-
-            IoCManager.Resolve<IClientAdminManager>().Initialize();
-            IoCManager.Resolve<IBaseClient>().PlayerJoinedServer += SubscribePlayerAttachmentEvents;
-            IoCManager.Resolve<IStylesheetManager>().Initialize();
-            IoCManager.Resolve<IScreenshotHook>().Initialize();
-            IoCManager.Resolve<ChangelogManager>().Initialize();
-            IoCManager.Resolve<RulesManager>().Initialize();
-            IoCManager.Resolve<ViewportManager>().Initialize();
-            IoCManager.Resolve<GhostKickManager>().Initialize();
-            IoCManager.Resolve<ExtendedDisconnectInformationManager>().Initialize();
-            IoCManager.Resolve<PlayTimeTrackingManager>().Initialize();
-
             IoCManager.InjectDependencies(this);
 
 #if FULL_RELEASE
@@ -129,71 +93,86 @@ namespace Content.Client.Entry
             IoCManager.Resolve<IConfigurationManager>().OverrideDefault(CVars.NetBufferSize, NetBufferSizeOverride);
 #endif
 
-            _baseClient.PlayerJoinedServer += (_, _) =>
-            {
-                IoCManager.Resolve<IMapManager>().CreateNewMapEntity(MapId.Nullspace);
-            };
+            _componentFactory.DoAutoRegistrations();
+            _componentFactory.IgnoreMissingComponents();
 
-        }
+            // Do not add to these, they are legacy.
+            _componentFactory.RegisterClass<SharedLatheComponent>();
+            _componentFactory.RegisterClass<SharedSpawnPointComponent>();
+            _componentFactory.RegisterClass<SharedReagentDispenserComponent>();
+            _componentFactory.RegisterClass<SharedGravityGeneratorComponent>();
+            _componentFactory.RegisterClass<SharedAMEControllerComponent>();
+            // Do not add to the above, they are legacy
 
-        /// <summary>
-        /// Subscribe events to the player manager after the player manager is set up
-        /// </summary>
-        /// <param name="sender"></param>
-        /// <param name="args"></param>
-        public void SubscribePlayerAttachmentEvents(object? sender, EventArgs args)
-        {
-            if (_playerManager.LocalPlayer != null)
-            {
-                _playerManager.LocalPlayer.EntityAttached += AttachPlayerToEntity;
-                _playerManager.LocalPlayer.EntityDetached += DetachPlayerFromEntity;
-            }
-        }
+            _prototypeManager.RegisterIgnore("accent");
+            _prototypeManager.RegisterIgnore("material");
+            _prototypeManager.RegisterIgnore("reaction"); //Chemical reactions only needed by server. Reactions checks are server-side.
+            _prototypeManager.RegisterIgnore("gasReaction");
+            _prototypeManager.RegisterIgnore("seed"); // Seeds prototypes are server-only.
+            _prototypeManager.RegisterIgnore("barSign");
+            _prototypeManager.RegisterIgnore("objective");
+            _prototypeManager.RegisterIgnore("holiday");
+            _prototypeManager.RegisterIgnore("aiFaction");
+            _prototypeManager.RegisterIgnore("htnCompound");
+            _prototypeManager.RegisterIgnore("htnPrimitive");
+            _prototypeManager.RegisterIgnore("gameMap");
+            _prototypeManager.RegisterIgnore("faction");
+            _prototypeManager.RegisterIgnore("lobbyBackground");
+            _prototypeManager.RegisterIgnore("advertisementsPack");
+            _prototypeManager.RegisterIgnore("metabolizerType");
+            _prototypeManager.RegisterIgnore("metabolismGroup");
+            _prototypeManager.RegisterIgnore("salvageMap");
+            _prototypeManager.RegisterIgnore("gamePreset");
+            _prototypeManager.RegisterIgnore("gameRule");
+            _prototypeManager.RegisterIgnore("worldSpell");
+            _prototypeManager.RegisterIgnore("entitySpell");
+            _prototypeManager.RegisterIgnore("instantSpell");
+            _prototypeManager.RegisterIgnore("roundAnnouncement");
+            _prototypeManager.RegisterIgnore("wireLayout");
+            _prototypeManager.RegisterIgnore("alertLevels");
+            _prototypeManager.RegisterIgnore("nukeopsRole");
+            _prototypeManager.RegisterIgnore("flavor");
 
-        /// <summary>
-        /// Add the character interface master which combines all character interfaces into one window
-        /// </summary>
-        public void AttachPlayerToEntity(EntityAttachedEventArgs eventArgs)
-        {
-            // TODO This is shitcode. Move this to an entity system, FOR FUCK'S SAKE
-            _entityManager.AddComponent<CharacterInterfaceComponent>(eventArgs.NewEntity);
-        }
+            _componentFactory.GenerateNetIds();
+            _adminManager.Initialize();
+            _stylesheetManager.Initialize();
+            _screenshotHook.Initialize();
+            _changelogManager.Initialize();
+            _rulesManager.Initialize();
+            _viewportManager.Initialize();
+            _ghostKick.Initialize();
+            _extendedDisconnectInformation.Initialize();
+            _playTimeTracking.Initialize();
+            _baseClient.PlayerJoinedServer += (_, _) => { _mapManager.CreateNewMapEntity(MapId.Nullspace);};
 
-        /// <summary>
-        /// Remove the character interface master from this entity now that we have detached ourselves from it
-        /// </summary>
-        public void DetachPlayerFromEntity(EntityDetachedEventArgs eventArgs)
-        {
-            // TODO This is shitcode. Move this to an entity system, FOR FUCK'S SAKE
-            if (!_entityManager.Deleted(eventArgs.OldEntity))
-            {
-                _entityManager.RemoveComponent<CharacterInterfaceComponent>(eventArgs.OldEntity);
-            }
+            //AUTOSCALING default Setup!
+            _configManager.SetCVar("interface.resolutionAutoScaleUpperCutoffX", 1080);
+            _configManager.SetCVar("interface.resolutionAutoScaleUpperCutoffY", 720);
+            _configManager.SetCVar("interface.resolutionAutoScaleLowerCutoffX", 520);
+            _configManager.SetCVar("interface.resolutionAutoScaleLowerCutoffY", 240);
+            _configManager.SetCVar("interface.resolutionAutoScaleMinimum", 0.5f);
         }
 
         public override void PostInit()
         {
             base.PostInit();
-
             // Setup key contexts
-            var inputMan = IoCManager.Resolve<IInputManager>();
-            ContentContexts.SetupContexts(inputMan.Contexts);
+            ContentContexts.SetupContexts(_inputManager.Contexts);
 
-            IoCManager.Resolve<IGameHud>().Initialize();
-            IoCManager.Resolve<IParallaxManager>().LoadDefaultParallax(); // Have to do this later because prototypes are needed.
+            _parallaxManager.LoadDefaultParallax();
 
-            var overlayMgr = IoCManager.Resolve<IOverlayManager>();
+            _overlayManager.AddOverlay(new SingularityOverlay());
+            _overlayManager.AddOverlay(new FlashOverlay());
+            _overlayManager.AddOverlay(new RadiationPulseOverlay());
 
-            overlayMgr.AddOverlay(new SingularityOverlay());
-            overlayMgr.AddOverlay(new FlashOverlay());
-            overlayMgr.AddOverlay(new RadiationPulseOverlay());
-
-            IoCManager.Resolve<IChatManager>().Initialize();
-            IoCManager.Resolve<IClientPreferencesManager>().Initialize();
-            IoCManager.Resolve<EuiManager>().Initialize();
-            IoCManager.Resolve<IVoteManager>().Initialize();
-            IoCManager.Resolve<IGamePrototypeLoadManager>().Initialize();
-            IoCManager.Resolve<NetworkResourceManager>().Initialize();
+            _gameHud.Initialize();
+            _chatManager.Initialize();
+            _clientPreferencesManager.Initialize();
+            _euiManager.Initialize();
+            _voteManager.Initialize();
+            _gamePrototypeLoadManager.Initialize();
+            _networkResources.Initialize();
+            _userInterfaceManager.SetDefaultTheme("SS14DefaultTheme");
 
             _baseClient.RunLevelChanged += (_, args) =>
             {
@@ -205,7 +184,7 @@ namespace Content.Client.Entry
             };
 
             // Disable engine-default viewport since we use our own custom viewport control.
-            IoCManager.Resolve<IUserInterfaceManager>().MainViewport.Visible = false;
+            _userInterfaceManager.MainViewport.Visible = false;
 
             SwitchToDefaultState();
         }
@@ -229,18 +208,5 @@ namespace Content.Client.Entry
                 _stateManager.RequestStateChange<MainScreen>();
             }
         }
-
-        public override void Update(ModUpdateLevel level, FrameEventArgs frameEventArgs)
-        {
-            base.Update(level, frameEventArgs);
-
-            switch (level)
-            {
-                case ModUpdateLevel.FramePreEngine:
-                    // TODO: Turn IChatManager into an EntitySystem and remove the line below.
-                    IoCManager.Resolve<IChatManager>().FrameUpdate(frameEventArgs);
-                    break;
-            }
-        }
     }
 }
diff --git a/Content.Client/Options/UI/Tabs/KeyRebindTab.xaml.cs b/Content.Client/Options/UI/Tabs/KeyRebindTab.xaml.cs
index 6073877f58..e3a7ed37f9 100644
--- a/Content.Client/Options/UI/Tabs/KeyRebindTab.xaml.cs
+++ b/Content.Client/Options/UI/Tabs/KeyRebindTab.xaml.cs
@@ -1,6 +1,3 @@
-using System;
-using System.Linq;
-using System.Collections.Generic;
 using Content.Client.Stylesheets;
 using Content.Shared.Input;
 using Robust.Client.AutoGenerated;
@@ -11,13 +8,9 @@ using Robust.Client.UserInterface.XAML;
 using Robust.Shared;
 using Robust.Shared.Configuration;
 using Robust.Shared.Input;
-using Robust.Shared.IoC;
-using Robust.Shared.Localization;
 using Robust.Shared.Timing;
 using Robust.Shared.Utility;
-using Robust.Shared.Log;
 using static Robust.Client.UserInterface.Controls.BoxContainer;
-using Robust.Client.UserInterface.CustomControls;
 
 namespace Content.Client.Options.UI.Tabs
 {
@@ -157,25 +150,14 @@ namespace Content.Client.Options.UI.Tabs
             AddButton(ContentKeyFunctions.TakeScreenshotNoUI);
 
             AddHeader("ui-options-header-hotbar");
-            AddButton(ContentKeyFunctions.Hotbar1);
-            AddButton(ContentKeyFunctions.Hotbar2);
-            AddButton(ContentKeyFunctions.Hotbar3);
-            AddButton(ContentKeyFunctions.Hotbar4);
-            AddButton(ContentKeyFunctions.Hotbar5);
-            AddButton(ContentKeyFunctions.Hotbar6);
-            AddButton(ContentKeyFunctions.Hotbar7);
-            AddButton(ContentKeyFunctions.Hotbar8);
-            AddButton(ContentKeyFunctions.Hotbar9);
-            AddButton(ContentKeyFunctions.Hotbar0);
-            AddButton(ContentKeyFunctions.Loadout1);
-            AddButton(ContentKeyFunctions.Loadout2);
-            AddButton(ContentKeyFunctions.Loadout3);
-            AddButton(ContentKeyFunctions.Loadout4);
-            AddButton(ContentKeyFunctions.Loadout5);
-            AddButton(ContentKeyFunctions.Loadout6);
-            AddButton(ContentKeyFunctions.Loadout7);
-            AddButton(ContentKeyFunctions.Loadout8);
-            AddButton(ContentKeyFunctions.Loadout9);
+            foreach (var boundKey in ContentKeyFunctions.GetHotbarBoundKeys())
+            {
+                AddButton(boundKey);
+            }
+            foreach (var boundKey in ContentKeyFunctions.GetLoadoutBoundKeys())
+            {
+                AddButton(boundKey);
+            }
 
             AddHeader("ui-options-header-shuttle");
             AddButton(ContentKeyFunctions.ShuttleStrafeUp);
diff --git a/Content.Client/Suspicion/SuspicionGui.xaml b/Content.Client/Suspicion/SuspicionGui.xaml
index 85c0b42bc7..8f519b2195 100644
--- a/Content.Client/Suspicion/SuspicionGui.xaml
+++ b/Content.Client/Suspicion/SuspicionGui.xaml
@@ -1,7 +1,8 @@
-<Control xmlns="https://spacestation14.io">
+<sus:SuspicionGui xmlns="https://spacestation14.io"
+                  xmlns:sus="clr-namespace:Content.Client.Suspicion">
     <BoxContainer Orientation="Vertical" SeparationOverride="0">
         <Button Name="RoleButton">
             <Label Name="TimerLabel" HorizontalAlignment="Right" VerticalAlignment="Bottom" />
         </Button>
     </BoxContainer>
-</Control>
+</sus:SuspicionGui>
diff --git a/Content.Client/Suspicion/SuspicionGui.xaml.cs b/Content.Client/Suspicion/SuspicionGui.xaml.cs
index e6507d3b6c..47568a3316 100644
--- a/Content.Client/Suspicion/SuspicionGui.xaml.cs
+++ b/Content.Client/Suspicion/SuspicionGui.xaml.cs
@@ -6,6 +6,7 @@ using Content.Shared.Popups;
 using Robust.Client.AutoGenerated;
 using Robust.Client.Player;
 using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
 using Robust.Client.UserInterface.XAML;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
@@ -17,7 +18,7 @@ using static Robust.Client.UserInterface.Controls.BaseButton;
 namespace Content.Client.Suspicion
 {
     [GenerateTypedNameReferences]
-    public sealed partial class SuspicionGui : Control
+    public sealed partial class SuspicionGui : UIWidget
     {
         [Dependency] private readonly IPlayerManager _playerManager = default!;
         [Dependency] private readonly IGameTiming _timing = default!;
diff --git a/Content.Client/HUD/UI/Placeholder.cs b/Content.Client/UserInterface/Controls/Placeholder.cs
similarity index 93%
rename from Content.Client/HUD/UI/Placeholder.cs
rename to Content.Client/UserInterface/Controls/Placeholder.cs
index e23a131d9e..f5a4408c9f 100644
--- a/Content.Client/HUD/UI/Placeholder.cs
+++ b/Content.Client/UserInterface/Controls/Placeholder.cs
@@ -1,6 +1,6 @@
 using Robust.Client.UserInterface.Controls;
 
-namespace Content.Client.HUD.UI
+namespace Content.Client.UserInterface.Controls
 {
     public sealed class Placeholder : PanelContainer
     {
diff --git a/Content.Shared/Input/ContentKeyFunctions.cs b/Content.Shared/Input/ContentKeyFunctions.cs
index b7f1ca5578..83432df8b2 100644
--- a/Content.Shared/Input/ContentKeyFunctions.cs
+++ b/Content.Shared/Input/ContentKeyFunctions.cs
@@ -57,6 +57,7 @@ namespace Content.Shared.Input
         public static readonly BoundKeyFunction ShuttleRotateLeft = "ShuttleRotateLeft";
         public static readonly BoundKeyFunction ShuttleRotateRight = "ShuttleRotateRight";
         public static readonly BoundKeyFunction ShuttleBrake = "ShuttleBrake";
+
         public static readonly BoundKeyFunction Hotbar0 = "Hotbar0";
         public static readonly BoundKeyFunction Hotbar1 = "Hotbar1";
         public static readonly BoundKeyFunction Hotbar2 = "Hotbar2";
@@ -67,6 +68,13 @@ namespace Content.Shared.Input
         public static readonly BoundKeyFunction Hotbar7 = "Hotbar7";
         public static readonly BoundKeyFunction Hotbar8 = "Hotbar8";
         public static readonly BoundKeyFunction Hotbar9 = "Hotbar9";
+
+        public static BoundKeyFunction[] GetHotbarBoundKeys() =>
+            new[]
+            {
+                Hotbar0, Hotbar1, Hotbar2, Hotbar3, Hotbar4, Hotbar5, Hotbar6, Hotbar7, Hotbar8, Hotbar9
+            };
+
         public static readonly BoundKeyFunction Loadout1 = "Loadout1";
         public static readonly BoundKeyFunction Loadout2 = "Loadout2";
         public static readonly BoundKeyFunction Loadout3 = "Loadout3";
@@ -76,6 +84,13 @@ namespace Content.Shared.Input
         public static readonly BoundKeyFunction Loadout7 = "Loadout7";
         public static readonly BoundKeyFunction Loadout8 = "Loadout8";
         public static readonly BoundKeyFunction Loadout9 = "Loadout9";
+
+        public static BoundKeyFunction[] GetLoadoutBoundKeys() =>
+            new[]
+            {
+                Loadout1, Loadout2, Loadout3, Loadout4, Loadout5, Loadout6, Loadout7, Loadout8, Loadout9
+            };
+
         public static readonly BoundKeyFunction Vote0 = "Vote0";
         public static readonly BoundKeyFunction Vote1 = "Vote1";
         public static readonly BoundKeyFunction Vote2 = "Vote2";
diff --git a/Resources/Prototypes/themes.yml b/Resources/Prototypes/themes.yml
new file mode 100644
index 0000000000..30a6ec3591
--- /dev/null
+++ b/Resources/Prototypes/themes.yml
@@ -0,0 +1,42 @@
+- type: uiTheme
+  id: SS14DefaultTheme
+  path: /Textures/Interface/Default/
+  colors:
+    whiteText: "#FFF5EE"
+    slotSelectedGold: "#e6b812"
+    slotColor: "#0f1215"
+    slotOutline: "#333850"
+    slotText: "#333850"
+    nanoGold: "#A88B5E"
+    goodGreenFore: "#31843E"
+    concerningOrangeFore: "#A5762F"
+    dangerousRedFore: "#BB3232"
+    disabledFore: "#5A5A5A"
+- type: uiTheme
+  id: SS14ClassicTheme
+  path: /Textures/Interface/Classic/
+  colors:
+    whiteText: "#FFF5EE"
+    slotSelectedGold: "#e6b812"
+    slotColor: "#0f1215"
+    slotOutline: "#333850"
+    slotText: "#333850"
+    nanoGold: "#A88B5E"
+    goodGreenFore: "#31843E"
+    concerningOrangeFore: "#A5762F"
+    dangerousRedFore: "#BB3232"
+    disabledFore: "#5A5A5A"
+- type: uiTheme
+  id: SS14ModernizedTheme
+  path: /Textures/Interface/Modernized/
+  colors:
+    whiteText: "#FFF5EE"
+    slotSelectedGold: "#e6b812"
+    slotColor: "#0f1215"
+    slotOutline: "#333850"
+    slotText: "#333850"
+    nanoGold: "#A88B5E"
+    goodGreenFore: "#31843E"
+    concerningOrangeFore: "#A5762F"
+    dangerousRedFore: "#BB3232"
+    disabledFore: "#5A5A5A"