This is a fairly interesting game, even though that the general idea of controlling multiple players idea has been revisited a bunch. You've got some good movement going, the controls feel nice, and even though you used pre-existing assets you've put them to good use here. The platforming feels good and the transitions between levels are really nice.
The only thing I would say is that the game feels a bit too slow; the beginning levels are fairly easy and it would be a lot nicer to incorporate more puzzle mechanics to spice up some levels.
This is a pretty good submission, hope this continues doing well in the jam!