Read more about Scourge (Marvel) at: Wikipedia

Official Site: Marvel Comics

Nuke (real name Frank Simpson) is a fictional supervillain in the Marvel Universe. The character first appears in Daredevil #232 and was created by Frank Miller and David Mazzucchelli. Nuke's most distinguishing feature is an American Flag tattoo on his face.

Nuke was actually a test subject of the Weapon Plus program, the supersoldier program that had created Captain America and would later transform Wolverine into a killing machine. The enhancing and conditioning process went awry, leaving Nuke seriously deranged.

The origins of Nuke are explained in the series Wolverine: Origins.

The disturbed son of a wealthy, abusive, alcoholic, upper-class woman in Ohio, Frank soon developed an unhealthy affection for his babysitter, the only real maternal figure in his life. The young woman, who was harboring feelings for his father Charles, capitalized on Frank's affection and talked the boy into killing his mother. Wolverine, who at that time was an operative for Weapon Plus had been sent to kidnap Frank Simpson. Wolverine showed up, dressed as a cop. He then stalked Charles Simpson and the babysitter, eventually shooting the girl with Charles' gun, after which Charles committed suicide. Wolverine then went to Frank's place and abducted him for the supersoldier project.

Scourge (Marvel) has not been a contender in any CBUB matches.