Pixar is back in theaters this month with “Toy Story 5,” and the legendary animation studio is already in development on more sequels such as “Incredibles 3,” “Monsters Inc. 3” and “Coco 2.” But one hit movie Pixar has yet to franchise is “Ratatouille,” Brad Bird’s 2007 Oscar winner about the rat Remy and his dreams of becoming a chef in Paris. The film is a bonafide classic and a box office success ($623 million worldwide, which is $1 billion when adjusted for inflation). Perhaps it’s only a matter of time until “Ratatouille 2,” and Remy voice actor Patton Oswalt is waiting for the call.

“Obviously, I’d love if there was a ‘Ratatouille’ sequel,” Oswalt said on The Daily Beast’s “Obsessed” podcast, although he stressed that a follow-up movie depends entirely on original director Brad Bird returning with a great idea.

“There was never gonna be an ‘Incredibles’ sequel until he thought, ‘Wait a minute. There is a story to tell,’“ Oswalt said of the filmmaker. “So if he gets an idea, that’s the one I wanna do. I don’t wanna be the guy going, ‘Hey, what if Remy did this?’ I want it to be one of those ideas that happens that you cannot get away from. I don’t want it to come from us going, ‘All right, let’s get out the legal pads and let’s break down a sequel.’ There are a lot of movies where that’s how they’re done, and it always feels inorganic.”

Oswalt continued, “I want the sequel to be not the same type of movie, but that same energy that ‘Terminator 2’ or ‘Aliens’ had, which is, there’s an expansion of the story that we that we actually need to tell… This isn’t just a money grab. And yes, by the way, we love the money, and we’re gonna grab it, but we’re gonna get the money by telling an amazing story with whole new dimensions that we didn’t even know beforehand.”

“Ratatouille” was director Bird’s follow-up to “The Incredibles,” with both films winning the Oscar for best animated feature. “Ratatouille” also picked up Oscar nominations for original score, sound editing, sound mixing and original screenplay. The movie’s $623 million gross made it the sixth highest-grossing film of 2007.