That would be the true identity of Aubrey Plaza’s Rio Vidal, a Green Witch ... or Lady Death, from Marvel comics, who at one point had a significant storyline as the love interest of Thanos ...

As soon as she breaks free from the Scarlet Witch's spell, she encounters none other than Rio Vidal, who would evenetually ... Along's Death differs from the Marvel Comics version.

Each witch in Agatha All Along episode 4 shared more about their past events, including the death of Agatha's son, her relationship to Joe Locke's enigmatic Marvel character, and Rio Vidal's true ...