io9 is on the ground at the annual convention in San Diego looking for our favorite cosplays of the day. Superheroes and villains are already out in full force as we kick off day one of SDCC 2024, from What We Do in the Shadows to Marvel to DC and more. But let’s not forget all the other fandoms ‘fits, like these amazing cosplays from Fallout, Barbie, and Pokémon too!
Here’s what we saw on day one! Click through the gallery to see who you can spot.
Don’t forget to find us if you’re at SDCC and want to serve the best looks in pop culture fandom on the site. We want to see your creations, makeup, group cosplays—all the true-to-screen details and passion on display.
Want more io9 news? Check out the best movies and TV shows to stream this month and all the upcoming sci-fi, fantasy, and horror books that should be on your radar.



















