F.R.I.D.A.Y. is a character from Marvel Comics and first appeared in the film Avengers: Age of Ultron. She is Tony Stark's backup A.I. in case her predecessor J.A.R.V.I.S. is destroyed. F.R.I.D.A.Y. is programmed to serve the same functions as J.A.R.V.I.S. As such, she is the A.I. that control all the technology Tony uses, including the Iron Man armors, and she runs Stark Mansion. She sees Tony as a father figure and is eager to help Tony in his time of need. F.R.I.D.A.Y. speaks with an Irish accent.
F.R.I.D.A.Y. was created by Mike Grell, Derek Fridolfs and Ryan Odagawa.