Pictured: Robert Kirkman (left) and Charlie Adlard at a panel for their comic book The Walking Dead.

Alistair Philp writes for Bleeding Cool from San Diego Comic Con;

Today was a good day for Walking Dead fans. After a ticket drawing in the morning, those lucky enough to be drawn were treated to a signing from writer Robert Kirkman and artist Charlie Adlard this afternoon. The two of them moved through the mountains of comics at an impressive pace getting through hundreds of comics, posters, and action figures before leaving for their panel. One of the most common items being signed was Walking Dead #100 which is out just in time for comic con and has no shortage of variant covers, including one exclusive to this year's comic-con in San Diego.

At the panel, which took place in a room absolutely packed with fans, Kirkman and Adlard answered questions about their popular comic (and show). Kirkman did most of the talking but Adlard spoke up to give some insight on some points as well. Some highlights from the panel are outlined below:

Random Fan: Will there ever be an ending to Walking Dead, do you have a particular ending in mind?

Robert Kirkman: We have talked about an ending that we'd do if we ever got to that point, right before our joint suicide, but with the popularity of the comic, and now the show, I don't see an end anytime soon.

Random Fan: Will we ever find out what caused the zombies?

Kirkman: No. Any reasons or explanation I would give would be too science-fictiony and sound fake or take away from the story. The series is based on a more or less real world and I want to keep it rooted in that realism.

Random Fan: We haven't so far seen any zombie animals, any chance of seeing any or maybe packs of wild dogs in the future?

Kirkman: Although zombie tigers sound awesome, there aren't any plans for them or any other animals either, going back to the realism mentioned earlier.

Random Fan: Are there any characters you regret killing off?

Adlard: "I miss drawing Dale." (This response was met with a collective "aww" from the audience)

Kirkman: I miss Axel and Tyrese the most, them and the governor. But I get to write him (the governor) again (on the show) so I don't care too much.

Random Fan: Any plans for a cameo on the show?

Kirkman: "I have no desire to be on the show… I have seen [my body] enough… I know I'm handsome!"

Random Fan: Is Eagan worse than the governor?

Adlard: Well, "he's based on Henry Rollins," so you know he's badass.

Kirkman: I don't think we know enough about him to say one way or another just yet, but he's "got a cool jacket."

Random Fan: How do you feel about the changes from the comic to the show?

Kirkman: "I'm proud of the way the show goes its own way… I get bored of doing the same thing." Take the arc with Sophia for example. On the show it was a great arc, with an amazing payoff in the end but it's totally different from what happened in the comic. In the comic she's still alive now and I've got plans for her in the future too.