Fun fact, I had a smilar initial idea, but I didn't go with it eventually. You did it pretty well!
There are a few weird things with controls (e.g. sometimes I jump and can't control my character when flying), but I'm usually bad with these games so that's also on me!
Visuals are cool, the idea of jumping on the twin's head is pretty interesting too.
I had a bug where one of the characters went off screen and I couldn't control it anymore. But otherwise, pretty nice game!