That's not it unfortunately, but thematically it may be close, I just remember this game being a 2d sidescroller, something either grey or black also comes to mind, but With only these fragments of memory to work with, it becomes quite difficult to piece them together. Maybe drop the animated series part, it could have been cutscenes in the game, I am unsure.
None of those games are even remotely close.
2D, It was colorful but I don't remember different colors being present at once, I remember stages being quite themed with their colors. here is maybe a hint at the visual style, but I can't find much like it, just remember it being blocky, like legos, but with a softer rounding, prob due to the technology at the time, as It was an old game. The character you play as was prob either of them, I anyway don't recall it being a human, or having any hints of realism.
Think of this, but the white blocks would look like small clouds, more rounder, and it would be like a platformer, with those cloudy/snowy blocks that you walk on, jump on, so these clouds being platforms
Clouds like these, but pressed together in a more blocky form, making platforming sections
But it is a bit more in this style than the picture at top. I mean the compression or the blocky artifacts that can be seen in the tree for example.
Btw there was also a game, featuring a boy and his dog, I think the dog got away, and I remember they boy fighting evil creatures, he might have had an electric attack.
Nevermind a google serach showed me this, so at least I know this one