This is Xenon, a new class called Automata in Maplestory. It's more of a side-class, and he belongs in the Resistance line of the game. He was kidnapped one day by the Black Wings (bad guys) when he was a child and was forcefully modified into an android-humanoid thing. Thus the neon-futuristic design, I guess?
There's more to say about his story, but I wouldn't spoil. It's not an original character by any means.