The rabbit boss has been modeled and rigged using AutoRig Pro addon in Blender 3.0. So, you can use the character in Blender 3.0 and up.
In this product file, you will get:
+ Rigged Rabbit Boss with head part, eyes, clothes, mouth, teeth, tongue, shoes
+ 4K Textures
With Subsurface = 0: Vertices = 24,171 ; Faces = 23,795