lazy, uninspired, lazy sprite swap, lazy writing, lazy dialogue; no animation at all.
Edit: You know what, I'll give some useful criticism, no need for my feedback to be lazy as your video afterall.
Writing; rules of 3 for writing when it comes to jokes.
Dialogue should be snappy or match the character, be line, something that's gone with a flow, improv has a flow of "yes and" approach. Slow drawn out Marvel humor of dialogue isn't funny.
Jokes should be act, react; not Marvel style humor where it's very one sided or a joke repeating or having no actual weight.
The color pallets being swapped isn't clever and has been a million times from lazy Sonic OCs to this. Some creative ways you could do the same trope of the "swapped character looks, woah!' is instead give actual physical looks and behaviors.
Uninspired because you didn't do anything new; anything and I mean ANYTHING different than the million times it's been done before. Just some twist on the tropes.
Is that useful enough feedback.