Nice game! Gonna answer in spoilers:

1Zero, Mega Man Zero (GBA)
2Larry Koopa, Super Mario Bros 3 (NES)
3Psaro the Manslayer, Dragon Quest IV (DS version...DQV next month!)
8Ryu Suzaku (dont' know his English name) from F-Zero Legend of Falcon (GBA)

and thassit. 5 looks like Fire Emblem, 9 looks like Princess Maker, but those are just guesses.