Deadpool & Wolverine is a film filled with numerous easter eggs and cameos that even the lead actor, Ryan Reynolds, was not aware of all of them. The film's stunt coordinator and second unit director, George Cottle, revealed that one of Deadpool's stunt doubles was played by Harry Holland, the younger brother of actor Tom Holland.
Harry's cameo as a Deadpool variant likely added to the fun surprise for Marvel fans and Reynolds himself, who humorously expressed his surprise on social media. The film featured a scene where Reynolds' Deadpool and Hugh Jackman's Wolverine faced off against a group of Deadpools from different universes, known as the Deadpool Corps.
Harry Holland has been involved in various Marvel projects, including working as a production assistant on his brother's Spider-Man films and portraying a bike thief in a cut scene from 'Spider-Man: No Way Home.'
Another notable cameo in the Deadpool Corps was Wrexham A.F.C. player Paul Mullin, known as 'Welshpool,' who sported the Welsh flag on his Deadpool variant suit. Reynolds also shared behind-the-scenes pics with Mullin on social media.
Additional voice cameos in the film included Matthew McConaughey as Cowboy Deadpool, Nathan Fillion as Headpool, and Blake Lively as Ladypool. Reynolds and Lively's children, Inez and Olin, lent their voices to Kidpool and Babypool, respectively. Their eldest daughter, James, portrayed a character named 'Screaming Mutant,' while their daughter Betty was credited as Jackman's 'wrangler.'