Skullion Raider

A Fifth Generation Dragon Slayer and member of Diabolos, a guild of dragon eaters.

Like the other members of Diabolos, Skullion is an avaricious individual, dedicated to eating dragons in order to take their powers. He displays a confident, somewhat arrogant disposition in battle, tending to look down on his enemies and viewing those who oppose him as fools. Acting as the de facto leader of his team, Skullion is shown to impose his decisions on his companions. He also appears to be intelligent.

At some point in time, Skullion devoured a Corpse Dragon, which enabled him to take on their power. He then joined Diabolos, a guild exclusively comprised of Dragon Eaters, fifth generation Dragon Slayers.

(Source: Fairy Tail Wiki)