diff --git a/Content.Client/AnthroSystem/AnthroSystem.cs b/Content.Client/AnthroSystem/AnthroSystem.cs
new file mode 100644
index 0000000000..c8991e8b2c
--- /dev/null
+++ b/Content.Client/AnthroSystem/AnthroSystem.cs
@@ -0,0 +1,149 @@
+using System.Collections.Generic;
+using System.Linq;
+using Content.Shared.AnthroSystem;
+using Content.Shared.CharacterAppearance;
+using Content.Shared.CharacterAppearance.Systems;
+using Content.Shared.Preferences;
+using Robust.Client.GameObjects;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Log;
+using Robust.Shared.Utility;
+
+namespace Content.Client.AnthroSystem
+{
+    public class AnthroEntitySystem : EntitySystem
+    {
+        [Dependency] private readonly AnthroMarkingManager _markingManager = default!;
+        [Dependency] private readonly AnthroSpeciesManager _speciesManager = default!;
+
+        public override void Initialize()
+        {
+            SubscribeLocalEvent<AnthroComponent, ComponentInit>(OnAnthroSystemInit);
+            SubscribeLocalEvent<AnthroComponent, SharedHumanoidAppearanceSystem.ChangedHumanoidAppearanceEvent>(UpdateMarkings);
+        }
+
+        static HumanoidVisualLayers[] actualBodyParts =
+        {
+            HumanoidVisualLayers.Chest,
+            HumanoidVisualLayers.Head,
+            HumanoidVisualLayers.RArm,
+            HumanoidVisualLayers.LArm,
+            HumanoidVisualLayers.RHand,
+            HumanoidVisualLayers.LHand,
+            HumanoidVisualLayers.RLeg,
+            HumanoidVisualLayers.LLeg,
+            HumanoidVisualLayers.RFoot,
+            HumanoidVisualLayers.LFoot
+        };
+        public static string DefaultBase = "human";
+
+
+        private void OnAnthroSystemInit(EntityUid uid, AnthroComponent component, ComponentInit __)
+        {
+            foreach (HumanoidVisualLayers layer in actualBodyParts)
+            {
+                Logger.DebugS("AnthroSystem", $"Activating marking tracking for {layer}");
+                component.ActiveMarkings.Add(layer, new List<AnthroMarking>());
+            }
+
+        }
+
+        public void ToggleMarkingVisibility(EntityUid uid, SpriteComponent body, HumanoidVisualLayers layer, bool toggle)
+        {
+            var owner = EntityManager.GetEntity(uid);
+            if(!owner.TryGetComponent(out AnthroComponent? anthroSystem)) return;
+
+            if (anthroSystem.ActiveMarkings.TryGetValue(layer, out List<AnthroMarking>? layerMarkings))
+                foreach (AnthroMarking marking in layerMarkings)
+                    body.LayerSetVisible(marking.MarkingId, toggle);
+        }
+        // we use HumanoidCharacterProfile because it already exists -
+        // we just grab the inner Appearance from it since we've tied it in
+        // severely to that
+        //
+        // Probably can untie it, though
+        //
+        // TODO: Untie Appearance.Markings, Appearance.SpeciesBase from
+        // HumanoidCharacterAppearance, inline with the whole SQL model
+        // thing as well probably
+        public void UpdateMarkings(EntityUid uid, AnthroComponent anthroSystem, SharedHumanoidAppearanceSystem.ChangedHumanoidAppearanceEvent args)
+        {
+            var appearance = args.Appearance;
+            var owner = EntityManager.GetEntity(uid);
+            if (!EntityManager.TryGetComponent(uid, out SpriteComponent? sprite)) return;
+
+            if (appearance.SpeciesBase != anthroSystem.LastBase
+                    && _speciesManager.SpeciesHasSprites(appearance.SpeciesBase,
+                    out IReadOnlyCollection<KeyValuePair<HumanoidVisualLayers, SpriteSpecifier?>>? speciesParts))
+            {
+                Logger.DebugS("AnthroSystem", "Rerendering body sprites due to species difference.");
+                anthroSystem.LastBase = appearance.SpeciesBase;
+                foreach (var (layer, speciesSprite) in speciesParts)
+                    if (speciesSprite is not null) sprite.LayerSetSprite(layer, speciesSprite);
+            }
+
+            Logger.DebugS("AnthroSystem", "Recoloring body now.");
+            foreach (var part in actualBodyParts)
+            {
+                if (!sprite.LayerMapTryGet(part, out int targetLayer))
+                {
+                    Logger.DebugS("AnthroSystem", $"Could not get layer {part}");
+                    continue;
+                }
+
+                sprite.LayerSetColor(targetLayer, appearance.SkinColor);
+            }
+
+            Logger.DebugS("AnthroSystem", "Rendering markings now.");
+            Logger.DebugS("AnthroSystem", $"Marking count: {appearance.Markings.Count}");
+
+
+            // Top -> Bottom ordering
+            foreach (var marking in appearance.Markings.Reverse())
+            {
+                if (!_markingManager.IsValidMarking(marking, out AnthroMarkingPrototype? markingPrototype))
+                {
+                    Logger.DebugS("AnthroSystem", $"Invalid marking {marking.MarkingId}");
+                    continue;
+                }
+
+
+                if (!sprite.LayerMapTryGet(markingPrototype.BodyPart, out int targetLayer))
+                {
+                    Logger.DebugS("AnthroSystem", "Could not get the target layer");
+                    continue;
+                }
+
+                Logger.DebugS("AnthroSystem", $"Adding {markingPrototype.Sprites.Count()} markings from {markingPrototype.ID} to layer {targetLayer}");
+
+                for (int i = 0; i < markingPrototype.Sprites.Count(); i++)
+                {
+                    string layerId = markingPrototype.ID + markingPrototype.MarkingPartNames[i];
+
+                    if (sprite.LayerMapTryGet(layerId, out var existingLayer))
+                    {
+                        Logger.DebugS("AnthroSystem", $"Deduplicating {markingPrototype.MarkingPartNames[i]} now from {existingLayer}");
+                        sprite.RemoveLayer(existingLayer);
+                        sprite.LayerMapRemove(marking.MarkingId);
+                    }
+                    Logger.DebugS("AnthroSystem", $"Adding part {markingPrototype.MarkingPartNames[i]} now to {targetLayer + i + 1}");
+
+                    int layer = sprite.AddLayer(markingPrototype.Sprites[i], targetLayer + i + 1);
+                    sprite.LayerMapSet(layerId, layer);
+                    sprite.LayerSetColor(layerId, marking.MarkingColors[i]);
+                }
+
+                Logger.DebugS("AnthroSystem", $"Marking added: {markingPrototype.ID}");
+                // _activeMarkings[markingPrototype.BodyPart].Add(marking);
+            }
+        }
+
+        /*
+        public void UpdateMarkings(EntityUid uid, HumanoidCharacterProfile profile)
+        {
+            UpdateMarkings(uid, profile.Appearance);
+        }
+        */
+    }
+}
diff --git a/Content.Shared/AnthroSystem/AnthroComponent.cs b/Content.Shared/AnthroSystem/AnthroComponent.cs
new file mode 100644
index 0000000000..f76c5be399
--- /dev/null
+++ b/Content.Shared/AnthroSystem/AnthroComponent.cs
@@ -0,0 +1,17 @@
+using System.Collections.Generic;
+using Content.Shared.CharacterAppearance;
+using Robust.Shared.GameObjects;
+
+namespace Content.Shared.AnthroSystem
+{
+    [RegisterComponent]
+    public class AnthroComponent : Component
+    {
+        public override string Name => "AnthroSystem";
+
+        public List<AnthroMarking> CurrentMarkingSet = new();
+        public List<AnthroMarking> LastMarkingSet = new();
+        public string LastBase = "human";
+        public Dictionary<HumanoidVisualLayers, List<AnthroMarking>> ActiveMarkings = new();
+    }
+}
diff --git a/Resources/Prototypes/Entities/Mobs/Species/human.yml b/Resources/Prototypes/Entities/Mobs/Species/human.yml
index d26b84579b..73ec1c4986 100644
--- a/Resources/Prototypes/Entities/Mobs/Species/human.yml
+++ b/Resources/Prototypes/Entities/Mobs/Species/human.yml
@@ -193,6 +193,7 @@
       types:
         Heat : 1 #per second, scales with temperature & other constants
   - type: HumanoidAppearance
+  - type: AnthroSystem # ECS!!!
   - type: Body
     template: HumanoidTemplate
     preset: HumanPreset
@@ -383,6 +384,7 @@
         layer:
         - Opaque
     - type: HumanoidAppearance
+    - type: AnthroSystem # ECS!!!
     - type: Body
       template: HumanoidTemplate
       preset: HumanPreset