Well, anyways, since no last name was given...
I'd like to suggest the names..
Jin [my favorite Xenosaga character Jin Uzuki, the super cool MVC character Jin Saotome, there is also a Jin in Samurai Champloo as well as in Bleach]
Hoennheim [personally I think he was the coolest male character in FMA, plus it's an actual place in Germany, and sounds pretty mysterious..]
Mako [mako reactor in FF7, mako shark in real life, and the super cool beautiful and powerful Sailor Jupiter's name..plus Mako is also a voice actor for uncle on Avatar..I think the name Mako sounds cool..a good unisex name]
Axel [Kingdom Hearts anatagonist and the lead character in Streets of Rage, both were cool strong characters and great fighters]
Hiro [unisex Japanese name. the cool and sweet Hiro from Lunar Eternal Blue is the main character [male] and also female, the beautiful and lovely voice of SPEED Hiroko...so it's a good name for boys or girls]
I think all are good suggestions: Jin, Hoennheim, Mako, Axel, Hiro