I was board so I thoght up this possible moveset!
UpB, Geno Blast, med.slow, dmg. 16-22: similar to pikachus downB but the blast of light goes throgh fallthrogh platforms. if preformed in the air it will pull geno up a good range, but if others get caught in it then it will pull them up too.
DownB, Geno Flash, med., dmg. 21-27: charge's it up a little then throghs it to the side.
SideB, Rocket Fist, Fast, dmg. 14-19: A rather fast attack, if it fails to hit someone Geno's fist's will fall to the ground and take longer to retract to him. if done in air then his fist will fire strait down then rocket back up.
NormalB, Geno Beam, med.fast, dmg. 5-30: looks alot like samus' FS but has a shorter range but the longer you charge it the longer the range and the more dmg. it does.
btw, i imagine geno with a long 2nt. jump like ness.
FS: Geno Flash: Geno trancforms into a cannon and it turns into a stationary first person shooter and the cannon goes to the front of the screen (if your playing with the wii-mote then you can aim that way!) now no one can hit you and you blast away with stars fireing in evary direction! p.s. once finished you teleport back to your origanal posistion.