Superman and Fantastic Four Share The Exact Same Villain, But Marvel or DC Will Never Make It Official

Yes, contempt Marvel oregon DC ever making it official, there's 1 villain that Supermanand the Fantastic Four hap to share. Both the Man of Steel and Marvel's First Family person absorbing rogues' galleries and, arsenic it happens, 1 peculiar villain from each of their franchises is really the aforesaid person.