The Boys Fan Theory That Led To Eric Kripke's Inclusion Of This Supe

In "The Boys" comics by Garth Ennis on which the TV series is based, there exists a housefly-themed Supe named Swatto. Possessing wings and the power of flight, Swatto is a member of Payback, the Supe team that predates The Seven and also includes Soldier Boy (Jensen Ackles). It looks like he'll be appearing in Season 3 of the show, as he's been spotted in the most recent trailer sporting his bug-eyed helmet and flapping his insectoid wings. However, as "The Boys" star Laz Alonso revealed in a group interview with his castmates for Vanity Fair, Swatto was only added to the show because of a fan theory regarding some buzzing flies that appeared on set.

In Season 1 Episode 4 of "The Boys," a fly can be seen humming around during a conversation between Butcher (Karl Urban) and Alonso's character, Mother's Milk. Alonso explained, "We shot Season 1 and we were shooting on location, and there was a fly catcher there because that place just had a lot of flies. When it aired, people thought it was one of the Supes named Swatto." But showrunner Eric Kripke apparently loved the idea and, much as he often did while helming "Supernatural," he decided to make the fan theory a reality. "Kripke went with it and built it into the show," Alonso revealed. "So that started out as a fan theory when really it was just a fly on set. It ended up being a part of the show."