Corvus Glaive

Corvus Glaive is a Marvel Comics character that appeared in Avengers Assemble and Guardians of the Galaxy. He is one of Thanos' second in command, and a general to Thanos' armies. He has superhuman strength, superhuman speed, invulnerability, he is an expert at hand to hand combat, he is a master strategist, and he only die if the blade of his scythe is broken.