Ryan Reynolds isn't just the Merc with the Mouth -- he's also the Merc with the Heart.

The actor recently shared a series of photos on social media featuring him and several visitors from the Make-A-Wish Foundation on the set of the upcoming Deadpool 2.

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"One of the best parts of playing the Big Red Jackass is welcoming Make-A-Wish America and Children's Wish Foundation of Canada onto set," Reynolds said via an Instagram caption. "Deadpool kicked Cancer in the taint, but these kids do it for real every day."

The photos feature Reynolds with young, heroic fans on set and in some cases with weaponry crafted by Deadpool Prop Master Dan Sissions (the "not stabby-stabby versions," Reynolds assures).

Reynolds goes on to praise organizations like the Make-A-Wish Foundation for allowing the dreams of both kids affected by terminal illness and their parents to come true.

While gleefully violent and profane, Deadpool also serves as an especially empathetic hero to those with caner. The character gains his regenerative abilities after undergoing desperate means to cure his own cancer.

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Reynolds posted a similar tribute two years ago during the filming of the first Deadpool to a young fan named Connor, who sadly didn't survive his battle with cancer. He praised Connor's Deadpool-ian sense of humor, as well as the Make-A-Wish Foundation for allowing their meeting to happen.

Debuting on May 18, Deadpool 2 is directed by David Letch and stars Ryan Reynolds as the titular Deadpool, Morena Baccarin as Vanessa, T.J. Miller as Weasel, Leslie Uggams as Blind Al, Brianna Hildebrand as Negasonic Teenage Warhead, Stefan Kapičić as Colossus, Zazie Beetz as Domino and Josh Brolin as Cable.