Here are some of mine, however there's no particular order.

Luigi

Mario's little brother often gets put on the back burner by Miyamoto and the other nerds creating things @ Nintendo. However, he's starred in a few games of his own, from the forgettable Mario is Missing to the epic Luigi's Mansion. On the Wii U, he's taken over w/ his own game, Super Luigi WiiU and by being hardcore on the road in Mario Kart 8.

Toad

What can I say about this Toad-ally awesome fun guy? He's a mushroom. He's a person. He's also one of the best characters to use in Super Mario Bros. 2, where he can pick a veggie as fast as Lindsay Lohan picks a drug dealer. He's also starring in his very own adventure on the WiiU.

T.G. Cid

Probably the baddest of all the Cids in the Final Fantasy series, Cidolfus Orlandeau is probably the most "broken" character outside of a Street Fighter game. He starts with the Excalibur, which gives Auto-Haste. He has every sword skill the other advanced knights can use. There's a reason why he's called the Thunder God.

Balthier

One part Han Solo, another part James Bond. This sky pirate nearly steals the "Bloody Pimp" title from Bartz. Having the baddest airship since the Blackjack, he and his partner Fran sail the skies not only in search of treasure, but to escape their respective pasts. He's handy w/ a gun & quick w/ his tongue, both skills he needs to evade the dastardly bounty hunters Ba'Gamnan and his scaly siblings.