Marvel's VisionQuest Finale Delivers A Perfect Agatha All Along Easter Egg

Contains spoilers for "VisionQuest" Season 1, Episode 8 – "Forever"

"VisionQuest" Season 1 (or possibly its only season) ends in a strange way: With the exception of surprise villain Virgil Horton (James Spader), the majority of main characters get what they want — or, as the surprise partnership between the preppy E.D.I.T.H. (Emily Hampshire) and the cynical Paladin (Todd Stashwick) shows, what they may not have even realized they needed.

The show's central character, Vision (Paul Bettany), gets arguably the nicest ending of them all, as he finally embraces his identity and role as Tommy Maximoff's (Ruaridh Mollica) father — and also enjoys a surprise reunion with his other son, Billy (Joe Locke). Interestingly, the show opts to bring Billy in completely without Vision's involvement. Instead, "Forever" sees Tommy seek Billy out by submerging himself in a bathtub, which allows Billy to locate him with dream-weaving and have a brief conversation. There's even a moment where Billy starts to seemingly ramble randomly at thin air. 

This makes zero sense if you aren't familiar with "Agatha All Along," which prominently features Billy. However, fans of that show will immediately understand that Billy's invisible friend is none other than Agatha Harkness (Kathryn Hahn) herself. This is a fun Easter egg that helps connect "VisionQuest" and its fellow Marvel spin-off in a substantial way — while offering a subtle reminder that Agatha is still very much out and about.

If you're not up to speed with the finale of "Agatha All Along," a short recap may be in order. Long story short, Agatha Harkness dies in the "Agatha All Along" ending. In order to save Billy, she makes her peace with her ex-lover Death (Aubrey Plaza), and voluntarily sacrifices her own life. 

But Agatha isn't quite done yet. Unwilling to move into the afterlife and face her long-dead son Nicholas Scratch (Abel Lysenko), she sticks around as a ghost and talks herself into a new gig as Billy's otherworldly witchcraft mentor. This is obviously what's going on in the "VisionQuest" finale, where Billy's learning dream-weaving, and Agatha may also have a hand in Billy's last-minute portal entrance during the show's endgame. 

"VisionQuest" has already indulged in plenty of "WandaVision" flashbacks. While the show's direct connections to "Agatha All Along" aren't quite as obvious, adding a nod toward its sister series is a welcome way to draw a throughline between all three shows.