You can read our guide to 'who is Teen in Agatha All Along' for the full breakdown but essentially in the final moments of episode 5, which is titled 'Darkest Hour, Wake Thy Power', it's seemingly revealed that Locke is actually playing Wanda's son Billy Maximoff, who is better known as Wiccan in the comics.

Agatha All Along has finally revealed Teen's identity, and even though it's something many predicted, the way it played out was still awesome.

This story discusses major plot developments in Season 1, Episode 5 of "Agatha All Along," currently streaming on Disney+. Practically since the news broke that "Heartstopper" star Joe Locke was joining the cast of "Agatha All Along,

Spoilers below for the latest episode of Agatha All Along, so be warned if you haven’t yet watched. With its fifth episode, “Darkest Hour / Wake Thy Power," Agatha All Along may have very well changed the game for upcoming Marvel movies and MCU TV shows by confirming the Disney+ series’ worst-kept secret: Teen’s true identity.

Agatha All Along episode 5 has finally revealed the real identity of Joe Locke's "Teen," paying off many clues from the MCU series' previous episodes.

While Agatha is clearly conflicted over the incident — happy to have powers again but broken over how she obtained them — she does her best to conceal her true emotions which leads to a confrontation between her and the other witches.

"Agatha All Along" has opened the floodgate to a world of interesting --and terrifying -- possibilities. Episode 3 confirms that Mephisto exists in the Marvel Cinematic Universe, suggesting that the devilish entity will make an appearance down the line.