A little boy suits up as Batman's sidekick, Robin, for Comic-Con International at San Diego Convention Center in San Diego, California on July 18th, 2013.
Comic-Con attendees get more undead every year.
Hats off to a trio of creative friends.
A unique get-up at Comic-Con.
A Spiderman-loving attendee arrives at Comic-Con International.
Comic-Con attendees mix and mingle.
A family sports perfectly synced Star Wars costumes.
An eclectic collection of costumes prevail at Comic-Con 2013.
More universes collide.
Comic-Con is fluid with gender boundaries.
A hairy appearance in San Diego.
Animal cosplay is alive and well at Comic-Con.
Revelers at Comic-Con.
Everyone's up for a round at Comic-Con.
They've appeared in comic books since 1977, after all.
Revelers dress as Nicholas D. Wolfwood (left) and Vash the Stampede (right). Yes, we had to Google it.
Fairy? Demon? You decide.