It’s eer looking pretty uhhh… I don’t know like Doom or Paper Mario.
Usually 2d on 3d both elements have to blend pretty well not to be jarring Treasure Planet and Atlantis are prime examples I’d highly suggest giving those a look for reference.
You’d probably have to put colored lights and shadows on Tempo in order for him to blend in more and give him a more cell shaded look.
Without that he just looks like a sheet of paper that’s been superimposed there.
It would be pretty awesome to see a cell shaded 3d model Tempo though.
It’s way easier to make a toon shader than do realistic textures in Blender.
3D animation in blender is a pain to be frank.
In the version I used there were all sorts of bugs in the shape keys after rendering like the character rotating in a super naturally slow pace even though I added no frame to even do that.
As can be seen in my second ever animated short Shuttle Gougemon … (extremely long title)
And you have to have a pc that’s not a potato or scrubbing the time line is impossible for a minute long short.