Ironheart (Riri Williams) is a fictional superhero appearing in American comic books published by Marvel Comics. The character was created in 2015 by writers Brian Michael Bendis, and artist Mike Deodato, and later redesigned by Eve Ewing and Kevin Libranda. Dominique Thorne is set to portray Williams in the Marvel Cinematic Universe streaming television series Ironheart, which is currently in development for Disney+.

Riri Williams is a 15-year-old engineering student and the daughter of the late Riri Williams Sr. Following her father’s death, Riri lives with her mother Ronnie and her paternal aunt Sharon in Chicago. A certified super-genius, she attends the Massachusetts Institute of Technology on scholarship. Working alone, Riri designs a suit of armor similar to the Iron Man Armor using material stolen from campus. When campus security knocks at her door, she flees while wearing the suit.

When Williams prevents two inmates from escaping the New Mexico State Penitentiary, her suit is damaged. Upon returning to her mother’s house, Riri continues to work on improving the suit, much to the dismay of her aunt. Tony Stark hears of Riri’s accomplishment and goes to meet her. During their meeting, Stark decides that he will endorse her decision to become a superheroine.