Agatha All Along: Aubrey Plaza’s Character Could Be the Key to Bringing Mephisto in the MCU

SUMMARY

• While Aubrey Plaza uses the name Rio Vidal in Agatha All Along now, fans are pretty sure that it is a secret identity.
• While theories are rampant about her true identity, one popular theory suggests that she could be Blackheart, Mephisto's son/daughter.
• This connection also alludes to the theories of Mephisto finally appearing in an MCU project in Agatha All Along.

Aubrey Plaza’s appearance in Agatha All Along has stirred a string of theories from fans. While some argue that she is the master of Mystic Arts, Morgan le Fay, others shared that she is Lady Death herself. A popular theory also connects her to the MCU’s evil comic book villain, Mephisto. According to this theory, Plaza’s Rio Vidal is Blackheart, the daughter of Mephisto.

Aubrey Plaza as Rio Vidal in Agatha All Along | Credits: Marvel Studios/Disney+

Fans have already found clues of Mephisto appearing in the series from the first episode. Connecting Rio Vidal to Mephisto is a strong supporting argument for that theory as well. From what little fans have learned of Plaza’s character, the Marvel lore of Blackheart seems to perfectly fit her.

Aubrey Plaza’s Rio Vidal Could Be Blackheart In Agatha All Along

Blackheart in the comics | Credits: Marvel Comics

Aubrey Plaza was introduced as a warrior witch Rio Vidal, who is an old enemy of Agatha Harkness in Agatha All Along. She was the ex-lover of the series’ titular witch, played by Kathryn Hahn. It was also revealed that they had a son Nicholas Scratch who was killed/sacrificed.

While ‘Rio Vidal is Death‘ theories are running rampant, another theory also fits into the storyline of Agatha. The first episode saw multiple mentions of “black heart” as Plaza’s character revealed that she has a heart and it’s black. All these point to the fact that she is the female version of Blackheart, who is the son of Mephisto.

A “trickster” is mentioned in the first riddle in the house and Blackheart happens to be a known liar and trickster. It could also be possible that Rio Vidal tricked Agatha into killing her son. Agatha could’ve then killed her and sucked all her power out. She then returns as the pure evil energy Blackheart, created by Mephisto. The theories are endless!

Mephisto is Marvel’s incarnation of the Devil, the demon that rules over Hell/Hades. It was widely speculated that the villain would make an entry into the MCU in Agatha All Along. In the comics, Mephisto created Blackheart from evil energies in Christ’s Crown, New York.

Blackheart’s arrival could mean a lot of things for MCU. The Agatha series probably won’t be the end game for Plaza’s character as Blackheart had turned against his father in the comics. Blackheart would go on to recruit heroes to fight Mephisto, which could be a great kickstart for the post-Multiverse phases.

Mephisto Was Hinted Through One Scene In The First Episode

Mephisto in the comics | Credits: Marvel Comics

In one of the scenes from the first episode, Joe Locke‘s Teen cannot reveal his name to Agatha. Whenever he tries to say his name, his mouth disappears. Fans noticed that the letter M appears in place of his mouth. They deduced that it could be the doing of Mephisto and a hint at his character’s introduction later in the series.

The M also appeared in other material related to the series, which makes fans’ suspicions grow stronger. A set of tarot cards featuring M in the corner was released as part of the promotional art for the series (via @ScarletWitchUpd). Agatha All Along will have to release further episodes to get clarity on the Mephisto situation.

All five episodes of Agatha All Along are now available for streaming on Disney+.

Written by Hashim Asraff

Articles Published: 1838

Hashim, Entertainment Writer. With over 1500 published articles on FandomWire, he covers a wide range of topics from celebrity life to comic book movies. He holds a Masters degree in Sociology and his expertise proves invaluable in handling sensitive news. His passion for crime investigation thrillers has turned him into a detective, exploring the darkest corners of the internet during his research.