Fictional supervillain Steppenwolf is the uncle of Darkseid, who appears in comic books published by what company?
Steppenwolf (comics):  Steppenwolf (which is German for "wolf of the steppe", or coyote) is one of the New Gods, the uncle of the archvillain Darkseid, and a member of Darkseid's Elite. Darkseid: Darkseid (pronounced "Darkside") is a fictional supervillain appearing in American comic books published by DC Comics.
DC Comics