Doctor Who star Matt Smith walked around San Diego Comic-Con’s packed convention center floor to explore everything the event had to offer. He did it without having to meet a single fan.

To walk around undetected, Smith walked around in a Bart Simpson mask and a small camera crew. Passersby thought nothing of it because there are so many cameras and mask-wearers around the floor.

Watch the hilarious video below:

As one person on YouTube put it: “A moment of silence for all Whovians who didn’t know it was him.”