Can you name every X-Men character ever introduced? Marvel’s superhero group of mutant outcasts was first published by the comic book giant in 1963. The main X-Men team would often be led by Professor Xavier, with many incarnations of the team — as well as a copious amount of characters — being introduced over the books’ 50 plus year run.

With such a large multitude of heroes gracing the pages for half a century, it would be understandable to lose track of every mutant who’d ever donned an X-Men costume. Well, IGN has put together an impressive infographic timeline that claims to have a definitive list. Check out the video “Every X-Man Ever” below and let us know if others should be added to the list!