I just did the T-shirt, ears , coloring and the face expression on 3DSmax !
# Everything I used:
* The head: https://www.models-resource.com/3ds/soniclostworld/model/11248/
* The upper: https://sketchfab.com/3d-models/arnold-schwarzenegger-t-pose-ef502ea197124b6e99d68826e4948467
* The lower: https://sketchfab.com/3d-models/rabbit-con-pant-98c89a38513344b0aec4f9be8035e31a
# The "Not Heavy" version
https://sketchfab.com/3d-models/compo-lapin-malin-4ad3ff1d9cc04163be00391ef77c9cd9