Ben Affleck has surprised and delighted a group of children by dropping in on their superhero party.
The actor, who plays the caped crusader in the upcoming Batman v Superman: Dawn Of Justice film, and his actress wife Jennifer Garner stopped off at Detroit Kid City in Southfield, Michigan, and asked if they and their two-year-old son Samuel could join the fun.
The Detroit Free Press said they were warmly welcomed.
Ben is in Detroit for the filming of the Warner Bros movie, set to be released in May 2016.
The indoor Detroit Kid City features a pint-sized market, cabin, car factory, schoolhouse and other buildings.
Detroit Kid City worker Garrett Dixon said Ben "was very interested in getting a Detroit Kid City out in LA".