They say you should never met your heroes — but they never said anything about superheroes.

So James took the cast of @XMenMovies #DarkPhoenix to surprise fans at a London comic book store!

Check it out and don't miss #DarkPhoenix in theaters now. pic.twitter.com/nGuuSc5Z3E

— The Late Late Show with James Corden (@latelateshow) June 7, 2019