Filmmaker Peter Jackson mingled with fans undetected at Comic-Con in San Diego, California on Saturday (26Jul14) by dressing up as an evil jester.

The Lord of the Rings director, who was there to attend a panel discussion on his The Hobbit film franchise, decided to don a black and white costume with matching face mask so he could enjoy the festivities at the annual bash without being hounded by devotees, and it wasn't until later that night that he went public with his disguise.

He shared a series of photos of himself undercover, posing with other attendees at the event on his Facebook.com page and included one shot of himself pulling off his face mask to reveal his real identity.

In the accompanying caption, he wrote, "I had a fun day at Comic Con walking among you all. Did anyone see the Evil Jester? Some of you did because you asked him to pose for pics! Cheers, Peter J".

Jackson isn't the only celebrity to dress up for the 2014 Comic-Con event - Daniel Radcliffe donned a Spider-Man costume to roam around the pop culture convention, while Jack Black also tried to go undercover on Thursday (24Jul14) by wearing a suit and covering his face in a Star Wars Stormtrooper helmet - only for him to be recognised by his voice.