Gene"s star power: Snatch catch
Gene's hand can claim gems (Maximum 3 gems), Showdown cubes (Maximum 3 cubes), ball in Brawl Ball, bolts in Siege and bounty star (I highly doubt the star would be available by the time you get your super but just in case)
Bull's star power: Insane train
When Bull uses its super, it could now control where it is going. Also the length of bull's super is increased by 25% so the controlling can last longer.