Suicide Squad director James Gunn is set to appear as himself in a Harley Quinn season 3 cameo. James Gunn made his DC debut last year with Suicide Squad, which critics and audiences heralded as one of the finest films in the superhero genre. Gunn returned to the DC Extended Universe earlier this year with Peacemaker, an HBO Max spin-off series based on John Cena’s patriotic hero from Suicide…
