Actor Mark Hamill has gone undercover as a stormtrooper for the Force for Change charity.
Hamill joked along as tourists blithely mispronounced his name and a Jedi challenged him to a duel, reported Digital Spy.
The stunt was organised by Omaze, who were also behind that amazing time that Arnold Schwarzenegger dressed up as the "Terminator" and terrified visitors at Madame Tussauds.
Force for Change is raising money for a series of charities including Barnados, UNICEF, Make-a-Wish and Africa Cancer Foundation.