Whether you’ve read all the “X-Men” comics or just seen a few film adaptations, you know there are a lot of characters, storylines and powers to keep track of. To help you sort it all out, IGN made an expansive video timeline of every mutant to join the X-Men since Stan Lee and Jack Kirby’s comic debuted in 1963 (not including some villains and side characters, however, as Yahoo pointed out). Check out the timeline above to become the ultimate “X-Men” expert before “Deadpool,” “X-Men: Apocalypse” and “Gambit” hit theaters in 2016.

For more, head to IGN.