Marvel co-creator Stan Lee took a dig at DC Comics while speaking to a panel audience at Fan Expo Canada on Friday.

One fan asked Lee to share his thoughts on famous DC characters and if he would “imagine” them any differently, Comic Book Resources reports. Lee reminded the audience he has already put his spin on Batman and Superman when he teamed up with DC in a series called “Just Imagine.”

“It’s funny you say that. I don’t know why but years ago DC comics asked me if I would write my version of their characters, and I wrote my own version of Superman, Batman, Wonder Woman, The Flash and the Green Lantern,” he explained.

“The terrible thing about it is that the stories were too good and they were illustrated beautifully, but there is no way DC can make movies of them cause DC would be putting down their own characters,” Lee continued. “I feel sorry for DC. They would really make great movies.”

It isn’t the first time Lee has made a tongue-and-cheek comment about his comic book rivals. During an interview with Digital Spy back in July, the former Marvel president and chairman jokingly claimed fan would head to see “Batman v. Superman: Dawn of Justice” if he made a cameo in the film.

"DC could probably make a lot more money with Superman and Batman if they announced that I'd have a cameo in it! People wouldn't believe it - they'd have to go to the theatre to see it," Lee said.

Lee most likely won’t be making a cameo in the Warner Bros. production, but did confirm he will make an appearance in "Avengers: Age of Ultron."

“Batman v. Superman: Dawn of Justice” will be released to theaters on March 25, 2016.