While a few instances of crossovers have happened in canon, for the most part, crossover action only really gets traction in the world of fanfiction. While we may not all get to see our favorite characters team up on the big screen, thinking about all the possibilities is just a part of being a geek! This week, Emily, Elisabeth, and Lindsay all discuss their favorite platonic pairings in their favorite fandoms, from DC and Marvel to Firefly and Star Wars, to Sailor Moon and Scooby-Doo! From the good guys​ to the anti-heroes, to the straight up villains, we list who we think would make the best cross-fandom BFFs.