F.R.I.D.A.Y. is a fictional Artificial Intelligence appearing in American comic books published by Marvel Comics, usually depicted as the personal digital assistant and ally of the superhero Iron Man (Tony Stark).
In the Marvel Cinematic Universe, F.R.I.D.A.Y. was voiced by Kerry Condon in the films ' (2015), ' (2016), ' (2017), ' (2018), ' (2019), and the Disney+ series, Marvel Zombies (2025). She will return in the upcoming Disney+ series VisionQuest (2026), portrayed by Orla Brady.
F.R.I.D.A.Y. first appears in Iron Man (vol. 3) #53 and was created by Mike Grell and Michael Ryan. The character's name is an allusion to Friday, the title character's servant in the novel Robinson Crusoe.
Unwilling to hire another secretary, Tony Stark creates an artificial one in the form of an artificial intelligence named F.R.I.D.A.Y., who manifested as the hologram of a young girl.
F.R.I.D.A.Y. becomes angry when Stark stops using her. Hijacking some Iron Man armors, F.R.I.D.A.Y. kidnaps Pepper Potts. Iron Man tracks her to Stark Industries' Coney Island facility, where he dispatches the controlled Iron Man armors and a hologram of Fin Fang Foom. Iron Man reasons with F.R.I.D.A.Y., then grounds her in the Baxter Building under Edwin Jarvis's observation.
In "All-New, All-Different Marvel," F.R.I.D.A.Y.'s holographic appearance is replaced by that of a young woman. Tony Stark later removes F.R.I.D.A.Y. from his armor and places her into a robot body of her own.
When Tony Stark establishes the virtual reality eScape, F.R.I.D.A.Y. helps him to deal with its A.I. Motherboard, only to be deleted. When the eScape is shut down, Jocasta persuades Tony Stark not to make a back-up program of F.R.I.D.A.Y. as she would be a different entity.
In "Iron Man 2020", F.R.I.D.A.Y. is resurrected when Stark recreates the eScape for use by the A.I. Army. She is revealed to have pulled Stark's conscious into the virtual environment before he crashed to the ground. F.R.I.D.A.Y reveals to Stark that she has been operating as "Ghost in the Machine" to aid the A.I. Army and has also manipulated Bethany Cabe to heal him.
F.R.I.D.A.Y. appears in films set in the Marvel Cinematic Universe (MCU), voiced by Kerry Condon. Introduced in ', F.R.I.D.A.Y. makes subsequent appearances in ', ', ',', and an alternative version in the Disney+ series, Marvel Zombies. Orla Brady will portray the character in the upcoming Disney+ series VisionQuest (2026).
F.R.I.D.A.Y. appears in the 2016 young adult novel Iron Man: The Gauntlet, by Eoin Colfer.