VisionQuest opened its eight-episode run without its most anticipated cast member in the credits — but almost everything Marvel has said and shown since the premiere suggests that’s about to change.
Joe Locke’s William Kaplan, better known to audiences as Billy Maximoff or Wiccan, has gone from “fan wish list” to “all-but-confirmed” return in the space of a few weeks, and the trail of evidence is now substantial enough to lay out in full.
The Short Version
By most accounts, the question of whether Wiccan appears in VisionQuest is no longer “if” but “when” and “how much.” Marvel itself appears to have let the cat out of the bag in a trailer, and the actor playing Billy’s twin brother has essentially confirmed it on camera. What remains genuinely uncertain is the scope of the role — a cameo, a recurring arc, or a full-blown Maximoff-family reunion finale.
Where VisionQuest Fits in the Story
VisionQuest is Marvel Television’s closing chapter in what showrunner Terry Matalas has described as the WandaVision trilogy — WandaVision (2021), Agatha All Along (2024), and now VisionQuest (2026). The series follows Paul Bettany’s rebuilt White Vision as he searches for identity and purpose, consulting AI personas like F.R.I.D.A.Y., E.D.I.T.H., J.A.R.V.I.S., and Ultron along the way, per the Marvel Cinematic Universe Wiki’s episode guide.
Midway through the first episode, Vision crosses paths with a London street hustler named Thomas Shepherd — who, as Agatha All Along viewers already know, is actually Tommy Maximoff’s soul transplanted into a new body, with Ruaridh Mollica taking over the role as an adult.
That single plot thread is the hinge on which almost the entire Wiccan theory turns, because wherever Tommy goes in VisionQuest, his twin brother Billy can’t be far behind.
Clue #1: The Trailer That Marvel May Not Have Meant to Release
The most concrete piece of evidence comes straight from Marvel’s own marketing. A VisionQuest trailer released ahead of the October premiere shows Vision seemingly having his memories or emotions restored by two sets of hands — one presumably Tommy’s, the other marked by black nail polish and a blue magical glow consistent with Wiccan’s signature spellcasting.
As BamSmackPow put it, Marvel Studios released a trailer ahead of the show’s premiere that appears to have prematurely revealed a major return, with fan accounts circulating stills described as the first look at Billy and Tommy using their powers on Vision together.
The outlet noted that a lot of people had suspected Billy would show up, but this marked the first time Marvel itself seemed to confirm it rather than fans simply speculating. A separate BamSmackPow follow-up framed it similarly, noting that this would place Joe Locke’s Wiccan in a rare category of actors with roles in two separate live-action MCU shows on Disney+, alongside Vision himself.
Also Read: VisionQuest: Is This Show Already Setting Up Ultron’s Great Escape?
Clue #2: Ruaridh Mollica’s On-Camera Slip to Entertainment Tonight
If the trailer was an accident, this one looks closer to a direct confirmation. Speaking with Entertainment Tonight, Mollica — who plays Tommy opposite Bettany’s Vision in VisionQuest — was asked about working with his on-screen brother.
According to Screen Rant’s writeup, Mollica confirmed that Joe Locke will return in later VisionQuest episodes, calling the experience of shooting together amazing. Screen Rant added that the pair had previously played Tommy’s brother in Agatha All Along, and worked together again on a West End play.
That quote spread fast. Comic Basics reported that Mollica confirmed in the Entertainment Tonight interview that Locke would return as Billy Maximoff, with Locke appearing in later episodes, and noted the actors’ real-life friendship traces back to co-starring as a couple in the West End production of Clarkston, where, per the outlet, Mollica said they filmed their Marvel scenes before performing together on stage.
A separate BamSmackPow explainer was more cautious about the semantics but reached the same conclusion, writing that unless both brothers have unexpected cameos in Avengers: Doomsday, Mollica was almost certainly referring to their VisionQuest scenes.
Even outlets covering Mollica’s Variety-style profile interview picked up on the real-world bond between the two actors, describing how Mollica turned up in a VisionQuest cap while Locke wore an Agatha All Along hat, with Locke later attending as his “MCU sibling” at a premiere event.
Clue #3: Joe Locke Himself Showed Up to the Premiere
Locke didn’t just talk about VisionQuest — he was physically present for it. According to the BamSmackPow “complicated” breakdown, speculation intensified after Locke attended the UK premiere of the show at the BFI London Film Festival, a detail that is hard to square with him having zero role in it. Attending a premiere doesn’t guarantee a credited role, but combined with everything else, it reads less like a courtesy appearance and more like a star showing up for his own project.
Clue #4: The Episode 1 “Crowd Cameo” Theory
Separately from the confirmed-later-episode talk, a more speculative theory has circulated about VisionQuest‘s actual series premiere. Per tbreak.com’s rundown of the theory, fans believe a figure with a familiar haircut appears twice in the crowd behind Tommy in episode one, which would make it the show’s very first hint of a Maximoff family reunion — though the outlet is careful to add that Marvel has not confirmed the cameo, and the sighting could still be a stray extra or a continuity slip.
This is the weakest piece of the VisionQuest puzzle on its own, but it fits a pattern of visual seeding that the show appears to be engaging in deliberately.
Clue #5: Marvel’s Own Social Accounts Are Playing Along
As recently as this week, Marvel’s Latin American social channels posted what looked like a binary-code riddle tied to the show. The Tab’s coverage described it as a cryptic post that some fans believe is hiding a clue about the Maximoff family ahead of VisionQuest‘s next batch of episodes, and concluded that it is far more likely the message refers to Locke’s Billy than to any appearance by Wanda Maximoff, given the existing trailer hints and Locke’s attendance at the premiere. The same piece pointed back to the Mollica/ET quote as reinforcing evidence.
Clue #6: The Insider Scoop on How He Shows Up
The most specific — and least verifiable — claim comes from industry “scoopers” rather than official Marvel sources. According to a report picked up by Yahoo Entertainment, a Marvel insider going by MyTimeToShineHello claimed Billy Maximoff would appear in two specific scenes in VisionQuest — one involving a telepathic call between Billy and Tommy, and another described as the series finale.
The outlet was explicit that Marvel had not officially confirmed this, and it should be treated as unverified insider chatter rather than a studio statement. Still, it’s notable that this leak lines up thematically with everything the trailer and the Mollica interview already imply: a mid-season or finale-adjacent reunion rather than a blink-and-you’ll-miss-it cameo.
Weighing the Probability
Putting the pieces together, here’s how the case for Wiccan’s VisionQuest appearance breaks down:
- Strongly supported (near-certain): Billy Maximoff appears in VisionQuest at some point in the back half of the season. This is backed by an actual Marvel-released trailer appearing to show his powers on-screen, an on-record comment from a credited VisionQuest co-star confirming Locke “returns,” and Locke’s physical attendance at the premiere.
- Reasonably supported (likely but unofficial): The reunion is specifically with Tommy, and possibly extends to a larger Vision–Billy–Tommy father-and-sons moment, a framing multiple outlets, including JustWatch’s explainer, have floated, noting that VisionQuest‘s trailers suggest the show will deliver not just a reunion between the brothers but between a father and his two sons.
- Speculative (unconfirmed): The exact scenes, episode numbers, and whether Wanda Maximoff factors in at all. The insider claim about a telepathic-call scene and a finale appearance is plausible but remains sourced to social-media leakers, not Marvel publicity.
- Weakest evidence: The episode 1 background-crowd sighting, which multiple outlets flag as unconfirmed and possibly just an extra with a similar haircut.
The Bottom Line
Taken together, the case that Joe Locke’s Wiccan appears somewhere in VisionQuest is about as strong as an unofficial Marvel rumor gets — strong enough that most entertainment outlets covering VisionQuest have stopped hedging and started reporting it as effectively confirmed, even while Marvel Studios itself has yet to issue a formal press statement.
What’s left genuinely open is scale: whether this is a brief, emotionally loaded cameo bridging VisionQuest to Avengers: Doomsday, or a meatier recurring arc that gives Locke real screen time opposite Bettany and Mollica before the season’s November 10 finale.
Given Marvel’s own trailer footage, Mollica’s unprompted on-camera confirmation, and Locke’s premiere appearance, bet on Wiccan showing up — the only real suspense left in VisionQuest is how big that moment turns out to be.
