Michael Keaton rejoined the comic book movie world last year when he premiered as Vulture, in Spider-Man: Homecoming. The Hollywood legend has become known as one of the best Marvel Cinematic Universe villains yet for his portrayal of the relatable Adrian Toomes, but for many fans, he will forever be known as Bruce Wayne from Tim Burton's Batman. In fact, it seems that Keaton himself remains a fan of his old work, as his most famous line from Batman almost popped up in Homecoming. During a panel appearance at Ace Comic Con in Seattle, Spider-Man actor Tom Holland explained: