To be honest, I think Geno should be the Jaden-Yubel impersonator, since Jaden-Yubel is the mature version of Jaden Yuki in the Nightshroud arc. Much like Captain Falcon and Ness, Geno could be voiced by a Japanese actor who does an American accent, leading to his gratuitous English lines like "Geno Whirl" and "Geno Flash". Also, this probably marks the first time Geno is given a standard voice, as opposed to his synthesized voice in the classic Super Mario RPG.