The movie that kickstarted the X-Men franchise along with Kevin Feige's filmmaking career is a no-brainer to watch before the "Deadpool" threequel.
An important movie for the character of Wolverine, this movie introduces us to Colonel William Stryker.
With Aaron Stanford's Pyro confirmed to be returning for "Deadpool & Wolverine", it becomes important to revisit the film where he made his heel-turn.
This critically panned movie marked the first time Ryan Reynolds played Deadpool on-screen, and was even called back to in 2018's Deadpool 2'.
This extremely important film introduces Evan Peters's Quicksilver as well as the Sentinels, and seemingly reconciles the confusing timelines.
Marking the first time we see this iteration of the Deadpool we all know and love, this R-rated movie is absolutely essential watching.
The time-travel shenanigans at the end of this movie directly set up the events of "Deadpool & Wolverine".
Scenes from this movie play on the Chrono Monitor screens in the "Deadpool & Wolverine" teaser.
Scenes and locations from this movie feature prominently in the "Deadpool & Wolverine" teaser.
Chris Hemsworth's Thor's legendary power-up scene is shown on the Chrono Monitors in the teaser.
The Time Variance Authority (TVA) from this series features prominently in "Deadpool & Wolverine".
Zemo, Sam and Bucky visit Madripoor, a location important to the X-Men, and also featured in the "Deadpool & Wolverine" teaser.