Jonathan
-Zoom punch really does look like something Dhalsim would do. If he had muscles.
-He uses Luck & Pluck in at least one of his moves.
-His super is the fire fists.

Zepelli
-Frog punching is one of his specials. Just replace "frog" with whoever he's facing.
-It looks like he also uses Zoom Punch?
-The pinky attack is his ultimate super.

Johnny
-As expected, he's riding on his horse.
-His ultimate super seems to be Tusk Act 4.