"Kirby's Camelot" from The Demon vol.1 #1 (DC, 1972) by Jack Kirby and Mike Royer
Oh yeah, I really should finish reading this Omnibus! The Demon probably isn't Kirby's best DC work - he famously didn't care for the "horror" assignment - but looking at his Camelot, it could have easily fit into his Fourth World. Arthurian legend was never so spacey. And Etrigan the Demon has become one of DC's most memorable characters. He's had many series over the years and guest-starred in many, many others. Living in Gotham City is probably a plus too. Definitely a favorite with me too, whether he rhymes or not. This first series lasted 16 issues, but there would be more to come. This is going to be the Week of the Demon at Your Daily Splash Page.