When Comic-Con comes to San Diego, you never quite know what's going to happen or who you could run into.
Party-goers at FLUXX Nightclub last night were greeted by Tested.com and Adam Savage to an open bar, free food and no cover.
Oh yeah, one more thing: a 90-minute surprise DJ set by the legendary Deadmau5.
Check out the fan-photos below, taken from Twitter and Instagram.
Deadmau5 surprise DJ set at FLUXX
FULL COVERAGE: Comic-Con 2015