Deathraven(Joshua Raven: Earth-691)

Deathraven [Joshua Raven] was the brother of Killraven [Jonathan Raven], who had been thought dead in the gladiatorial arena. In actuality, Joshua had been taken to the Yellowstone Mercenary Sector by Exterminator Saunders, a human ally of the Martians who had killed Maureen Raven (the Raven brothers' mother), to be trained as an Exterminator himself. He can assume the form of a wolf, he has heightened senses, and the power of invulnerability.