Superalloy Darkshine  is a S-Class, rank 11, hero for the Heroes Association.

He seems to be a vain person, as seen when he was sitting at a meeting with other S-Class heroes, he wondered whether everyone's eyes were glued to his body and whether or not he was the shiniest person in the room. He also has a pretty "tight" relationship with Pri Pri/Huff Puff Prisoner.

Sound like a charming, but also a bit wackey. A deep voice with a little bit of silliness when saying the lines. Look at Louis Armstrong from FullMetal Alchemist for reference.