Bill Nighy has a secret role in Detective Pikachu and there's been a lot of speculation about what that might be. Some fans think he could be the creator of Mewtwo (a.k.a. the movie's villain), while others are convinced that he'll be bringing Professor Oak to the big screen for the first time in live-action.



Whatever the case may be, he's revealed in a new interview that his Pokemon knowledge was sparse before he ended up being cast in the movie alongside Ryan Reynolds!



"You can guess how much I knew about Pokemon before I did the movie," he reveals in the latest issue of Total Film Magazine. "I know a bit more now. I met the head of Pokemon, the seventh richest man in the world, I think, and the man who drew all the Pokemon. And I bought the Pokedex, which is a fabulous book, actually. It was great fun."

"It’s such a beautiful book," he continued. "It’s got a plastic ball in the cover, with a Pikachu inside. I got very interested in the thing. In fact, I have two decorative panels made of plaster, to look like stone, with classical figures next to Pokemon figures. They look like ancient Grecian works of art. They were on the set and I admired them, so they gave them to me. I’m the only person in the world who has these things. I might have to eBay them for charity or something."