What kind of group does Madmen and DC Comics have in common?
DC Comics:  Most of their material takes place in the fictional DC Universe, which also features teams such as the Justice League, the Justice Society of America, the Suicide Squad, and the Teen Titans, and well-known villains such as the Joker, Lex Luthor, The Cheetah, Harley Quinn, Darkseid, Catwoman, Ra's al Ghul, Deathstroke, Reverse-Flash, Sinestro, Black Adam, and Brainiac.
i don't know