User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-23915152-20150121232700/@comment-184612-20150122003735

Super Mario

The Legend of Zelda

Metroid

Mega Man

Sonic the Hedgehog

The above have all been confirmed as being localized. No word on One Piece, but I highly doubt it due to licensing issues, especially due to the fact that the Clima-Tact has already been replaced by the Clockwork Contraption.