Jaden is a character canidate for SSB4. He is the hero of Yu-Gi-Oh! GX. Like Yusei Fudo, he is fully playable. Jaden's series is as popular in North America as Goku's is in Japan, so he could fint into the "East .vs. West" theme of SSB4.
Standard: Elemental HERO Clayman Punch
Side: Elemental HERO Burnstinatrix's Burstfire
Up: Elemental HERO Flame Wingman Flight
Final Smash: Wrath of Neos