Deadpool 3 marks a full circle moment for Reynolds' Deadpool and Jackman's Wolverine. Reynolds first played Deadpool in the 2009 movie X-Men Origins: Wolverine, which featured an ill-conceived finale in which Reynolds' anti-hero was depicted with his mouth sewn shut. Reynolds has oft-mocked that depiction, given that Deadpool is known for his banter, going by the nickname "the Merc with the Mouth."
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This marks the first Deadpool movie made by Marvel Studios after 20th Century Fox released two in 2016 and 2018. Jackman is not the first X-Men star to come out of retirement from his character for the Marvel Cinematic Universe. His Logan co-star Patrick Stewart appeared in a cameo in this summer's Doctor Strange in the Multiverse of Madness.
In addition to bringing together Jackman and Reynolds, Deadpool 3 will be a reunion for Jackman and Marvel Studios boss Kevin Feige, who is producing the film. Feige got his start in the business on the very first X-Men film, where he earned an associate producer credit.