Blok (DC)

Blok is a superhero in the 30th Century. Born the last of his race on Dryad, his stony physiology makes him incredibly strong and durable. He is a member of the Legion of Super-Heroes, although he originally belonged to the League of Super-Assassins. His long-term romantic partner is the White Witch. Blok was created by Gerry Conway and Joe Staton, first appearing in Superboy and the Legion of Super-Heroes  #253. (1979)