“„Like‟ is a mild sort of word for what Con and I have,” Collin replied, leaning forward to touch noses with the big doofus. Constantine half-closed his eyes and twitched his whiskers back. “I‟d go with the deeply twisted interpersonal relationship that a hero has for his nemesis, sort of a Batman/Joker thing, if the Joker suddenly started going down on Batman like a porn-star on Viagra.”Jeff looked at him in alarm. “Jesus, Sparky, stop touching my cat!”

“So why don't we have a go? There are two of us.'Little Mike realized that his friend was actually serious. 'Two of us? Father Hillary had God Almighty helping out, and look where it got him.''I know. But we're a team. For years, since primary. Batman and Robin.''Robin got killed,' said Mike.Christy was shocked. 'He did not, did he? Jesus, I didn't hear about that.''Yeah. It was a big shock. The Joker kilt him.''That fuckin' Joker. I didn't see that coming.' ("Taking on PJ")”

“I can tell we’re going to get along like Batman and the Joker. (Fang)Just remember one thing, world. I’m the best friend you’ll ever have or the last enemy you’ll ever make. (Thorn)”

“It isn't possible to smile too much, odd one.""Did you ever see the Joker in Batman?”

“Roarke, what's going on here?' 'Lieutenant.' He leaned forward, touched his lips to hers. 'Indications are we're having a romance.”

“Yeah. Floyd is his batman."His what?"Batman, like in the British army, each officer had a batman, a personal servant."You spend too much time reading, Spenser. You know more stuff that don't make you money than anybody I know.”