walking on giant mesh

I havent tried this but, where can i read about
big character you can walk on?
In unity it’s much harder since skinned mesh collider isnt exactly nice.

i want to have like, kingdomhearts effect where you can walk on big enemies and sorts.

I would think that having proper collision volumes would work.
I don’t know how accurate per triangle collision works with animated meshes, You could try enabling it and seeing if it works.