Malfaex (Supers!)

From publisher blurb: Malfaex is a brutal interstellar mercenary who wields the fearsome weapon known as the Void Hammer. He is a sell-sword in service to Krux Morta - the most evil being in the galaxy. Malfaex is often dispatched by Morta to remote star systems (like Earth's) to retrieve mystical artifacts for his arsenal.