Ryan Reynolds stars in Marvel's upcoming superhero flick Deadpool, but his most heroic act happened off camera.
A young boy named Tony Acevedo, who is battling Hodgkin's Disease, met the actor on set thanks to the Make-A-Wish Foundation.
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"I wasn't expecting him to sneak the mask, put on the gloves, smile ... and then beat Deadpool about the face, arms and jugular with blazing speed," Reynolds posted to Instagram. "Tony's next fight is with Hodgkin's Disease. Hodgkin's Disease best be wearing its brown pants."
Reynolds is used to getting beaten up on set judging by a selfie posted last month, featuring the 38-year-old actor on set with a face full of bruises.
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According to a rep for Make-A-Wish, Tony told volunteers that "Deadpool never dies and everything he touches has magical powers."
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In December, Reynolds welcomed a child of his own with wife Blake Lively and Reynolds had a special Mother's Day message this year that was probably a little more racy than most moms are used to getting on their special day.
Deadpool opens Feb. 2016.