Rika Monster Rig

Full Creature Rig — Jujutsu Kaisen

MayaCreature RiggingSkin WeightingIK/FKFan Project
Full control rig in A-pose — color-coded NURBS controllers (left in red, right in blue, spine and tail in yellow)

Full control rig in A-pose — color-coded NURBS controllers (left in red, right in blue, spine and tail in yellow)

Torso & Tail Controls

Hands & Arm Controls

IK/FK Switching

Jaw & Clavicle Controls

Overview

A full creature rig for Rika, the cursed spirit from Jujutsu Kaisen. The model came from Sketchfab — the entire rig is my own work. Unlike a clean biped, Rika is a monster: an oversized toothy maw, long clawed arms, and a bulky asymmetric silhouette, so joint placement and skin weights were solved per-region rather than mirrored. Key features include IK/FK arms, a dedicated jaw and gaze setup, and a clean, clearly-named outliner.

Structure & IK/FK

Geometry, joints, and controls in clean top-level groups

Geometry, joints, and controls in clean top-level groups

Each arm splits into FK, IK, and hand sub-groups

Each arm splits into FK, IK, and hand sub-groups

Arm FKIK switch

Arm FKIK switch

Tools & Credits

Autodesk MayaConstraintsSkin WeightingIK/FK Setup

Base model sourced from Sketchfab. Rigging, controls, deformation, and facial setup done by me. Personal fan project — Jujutsu Kaisen and Rika are property of Gege Akutami / Shueisha.