AceShowbiz - "Deadpool 2" is not only giving fans a post-credit scene, but five post-scenes in total. The post-credit scenes apparently have nothing to do with time-travelling character Cable (Josh Brolin), but more about the "X-Men" movies timeline.
The first post-credit scene, or more specifically mid-credit scene, sees [SPOILER ALERT!] Negasonic Teenage Warhead (Brianna Hildebrand) and her girlfriend Yukio (Shioli Kutsuna) repairing Cable's time-travel device. After the pair manage to make it useful again, they give it to Deadpool a.k.a. Wade Wilson (Ryan Reynolds), but quickly realize that it may not be a good idea.
It appears that the Merc with a Mouth uses the device to go back in time to save Vanessa (Morena Baccarin), who is killed by a hired killer earlier in the movie. The movie features Deadpool trying to kill the killer by throwing a cream cheese powder. He misses though, leading the killer to shoot and kill Vanessa. Now, as Deadpool is given another chance to make it right, he kills the killer before he even gets a shot off. It means that Morena is alive, thanks to Cable's device.
Morena is not the only character that Deadpool saves. He decides to save Peter (Rob Delaney), a member of X-Force, who died alongside Bedlam (Terry Crews), Shatterstar (Lewis Tan), Vanisher (Brad Pitt) and Zeitgeist (Bill Skarsgard) after parachuting out of a plane. Although it's not explicitly depicted, fans assume that Wade also saves the rest of X-Force members.
The next post-credit scene is probably the most interesting one. It features Deadpool showing up at the end of "X-Men Origins: Wolverine". With that being said, it seems like the device is not only able to bring you back to the past, but also make you travel to alternate universes. "Just cleaning up the timelines," he tells Wolverine (Hugh Jackman) while shooting this fan-hated version of Deadpool in the head a bunch of times.
His action is probably driven by the fact that the 2009 movie's version of Deadpool is dubbed a blasphemous depiction of the character. That explains why the Deadpool of "Deadpool 2" seemingly wants to remove him from the history.
"He [Jackman] and Ryan are frenemies, you know, online, and in the public. But they're actually good friends, and he was very supportive, so that was awesome," screenwriters Rhett Reese says of the aforementioned scene, adding that he and co-writer Paul Wernick needed Jackman's permission to use the footage.
The final post-credit scene has Deadpool making a reference to Green Lantern, another superhero played by Reynolds. The scene sees Reynolds looking at the script for "Green Lantern" and optimistically musing, "Finally hit the big league, kid." However, Deadpool later shows up and shoots him in the head. Deadpool then remarks, "You're welcome, Canada."
Well, if we’d used a NuvaRing™️ in the first place, we wouldn’t be in this mess. #deadpool2— Ryan Reynolds (@VancityReynolds) May 19, 2018
"Green Lantern" debuted in 2011 and is considered a disappointment. It looks like Deadpool agrees with the majority sentiment of the DC movie. It's hilarious, and Warner Bros. appears to play along with the joke. Taking it on Twitter, it asks Reynolds to give back his Lantern ring. Reynolds responded, "Well, if we'd used a NuvaRing in the first place, we wouldn't be in this mess."