Quaternius IK-Rigged Characters — Godot 4 Addon

IK-rigged humanoid character scenes built on Quaternius CC0 Superhero models, with a full animation library. Drop-in addon for Godot 4.6+.

This is intentionally a foundation, not a finished system. There is no animation controller, state machine, or procedural solver included — just a clean full-body IK rig and a ready-to-use animation library. Take it, make it yours.

Installation

Via the Godot Asset Library (in-editor): search for Quaternius IK Rigged, download, and install. The files land under addons/quaternius_ik_rigged/.

Manual: copy the addons/quaternius_ik_rigged/ folder into your project's addons/ directory. Godot will import the assets on next focus.

No plugin needs to be enabled — this is an asset pack, not an editor plugin. Just open one of the rigged scenes below.

Requirements

• Godot 4.6+ (uses the TwoBoneIK3D node)

Contents

addons/quaternius_ik_rigged/
├── UAL1_Standard.glb          # Animation library (Godot-retargeted)
├── Humanoid_map.tres          # Animation retargeting profile (BoneMap)
├── Godot - UE/                # Source GLTF models + textures (Superhero Male/Female)
├── Quaternius Meshes/         # Extracted ArrayMesh resources (eyes, eyebrows, body)
├── Animations/                # Extracted Animation resources (.res)
└── Models_with_rigging/
    ├── Master_Rigged.tscn     # Male — full IK rig + AnimationPlayer
    ├── Female_Rigged.tscn     # Female — full IK rig + AnimationPlayer
    └── Male_rigged.tscn       # Male variant

Scene structure

Each rigged scene follows this hierarchy:

[Node3D]  (root)
├── Armature
│   └── GeneralSkeleton (Skeleton3D)
│       ├── Eyebrows, Eyes, Body  (MeshInstance3D)
│       ├── L_ArmIK3D   (TwoBoneIK3D)  LeftUpperArm → LeftLowerArm → LeftHand
│       ├── R_ArmIK3D   (TwoBoneIK3D)  RightUpperArm → RightLowerArm → RightHand
│       ├── L_LegIK3D   (TwoBoneIK3D)  LeftUpperLeg → LeftLowerLeg → LeftFoot
│       └── R_LegIK3D   (TwoBoneIK3D)  RightUpperLeg → RightLowerLeg → RightFoot
├── L_Hand_target / L_Hand_pole   (Marker3D)
├── R_Hand_target / R_Hand_pole   (Marker3D)
├── L_foot_target / L_foot_pole   (Marker3D)
├── R_foot_target / R_foot_pole   (Marker3D)
├── StomachLookAt                 (Marker3D)
└── AnimationPlayer               (linked to UAL1_Standard animation library)

Move the Marker3D targets and poles at runtime to drive the IK chains. Each TwoBoneIK3D has influence set to 0.0 by default — ramp it up to blend between the animation pose and full IK.

Animations (UAL1_Standard)

License & credits

Released under CC0 1.0 Universal (see LICENSE) — public domain, no attribution required.

Models and animations by Quaternius, also CC0. Attribution is appreciated but not required.