Etrigan the Demon makes an appearance in The New Batman Adventures episode "The Demon Within." Etrigan is the demonic alter ego of Jason Blood, a cursed immortal who is bound to speak in rhymes and ...
Etrigan the Demon was created by Jack Kirby for DC Comics in 1972, and he is a rhyming demon from Hell, who is bound to the mortal man Jason Blood. When Jason speaks the magical incantation, "Gone, ...