Whats a witch without her dark magical secrets? Marvels Agatha All Along miniseries has one front and center. The starring turn for Kathryn Hahns diabolical Agatha Harkness, last seen in 2021s WandaVision, features a plucky young witchy wannabe initially only as Teen, and played by Heartstoppers Joe Locke.The characters real name has not yet been stated: As of tonights premiere episodes, theres a clear magic effect keeping him from revealing it. Hes listed in the credits as Teen and referred to in the show as Teen. And the cast and crew has kept his identity under lock.But if you know anything about Marvel Comics Scarlet Witch, Marvel magic, or the settings teen superheroes, youve got a solid hunch. If Locke isnt playing Billy Kaplan, AKA Wiccan, it would be extraordinarily strange.Who is Billy Kaplan?Billy is the teenage Marvel Comics superhero known as Wiccan, or the Demiurge. Hes a frequent member of the Young Avengers, on the occasions that that team is together and adventuring. Hes got innate magical powers that allow him to warp reality simply by stating what he wishes to occur and focusing on that intention. And he has a magical destiny to grow into: Its been prophesied that someday he will grow so powerful that he will be able to rewrite the laws of magic itself.That might not seem Teens real identity is a shoo-in. Right now, all we know is that hes a teenage boy who has a boyfriend, and wants to be a witch, and that even though hes kind of dopey, hes powerful enough to crack the Scarlet Witchs imprisoning illusion around Agatha. Oh, and whenever he tries to say his name or explain who he is, Agatha just hears nonsense or muted noise. Nothing thats happened in Agatha so far contradicts the possibility that Teen is an original character, new to any Marvel timeline.But theres a ton of circumstantial evidence suggesting that hes Wiccan. For one: Locke is a dead ringer for the character design. Skinny teen boy, floppy dark hair. Check.For another, Billy is a Scarlet Witch-adjacent character, and this is a Scarlet Witch-adjacent show. In the comics, Billy is its more complicated than this, but dont worry about it one of the Scarlet Witchs long-lost twin sons. Her kids, Billy and Tommy (or illusions of them, at least), have already featured in WandaVision and in the alternate universes visited in Doctor Strange in the Multiverse of Madness. Teen could be the Marvel Cinematic Universes way of integrating Billy into the main timeline in a lasting way.We also know that Teen has a boyfriend: Wiccan is one of Marvels most prominent queer characters. He and his boyfriend Teddy (the superhero known as Hulkling; no relation to the Hulk) have been together in comics for almost two decades.To sum up: Billy and Teen are both witchy magic users of certain power, they share a certain look, theyre both linked to the Scarlet Witch, and theyre both queer. Agatha All Along hasnt revealed anything that would keep Teen from being an original character, but it also hasnt revealed anything that would keep him from being the Marvel Cinematic Universe version of Billy, either.Well be watching Agatha All Along closely over the rest of its episodes, to see if its really pulling a Wiccan All Along, and well keep you updated. Because if this isnt Billy Kaplan, its the misdirect of the century.