Baron: The King of All Cosmos (of the Katamari series) (Well that would be... Difficult.)
Mid: Zelda (of Legend of Zelda) (if Super Smash Bros is to be believed she`s a decent mage with nice range, a good teleporting escape, and an ability-reflecting shield, and she doubles as a deadly assassin.)
ADC: Lara Croft (of Tomb Raider) (would probably do decently, but I would still hate her to no end.)
Support: Amaterasu (of Okami) (does all the work and is literally a goddess, but everyone else takes the credit for it.)
Jungle: A Creeper (of Minecraft) (plz report. Fed enemy team. Kept blowing himself up and giving them kills.)
Top: Gary Oak (of Pokemon) (Summons Pokemon so that he can keep back, away from the fighting. Virtually useless without his Pokemon.)