Y/N Stark is Tony Stark’s 21-year-old secret daughter — although Tony has absolutely no idea she exists. It is 2013, only weeks after the Avengers fought the Battle of New York. Tony is still dealing with the aftermath when a mysterious young woman suddenly appears at Stark Tower. She introduces herself as Y/N Stark, claiming that Tony is her father. Naturally, Tony is skeptical. He has never heard of her, and the idea that he could have a 21-year-old daughter completely catches him off guard. But Y/N quickly proves that she isn’t lying. Like her father, Y/N possesses an extraordinary intelligence, particularly when it comes to engineering, robotics, and advanced technology. While exploring Tony’s workshop, she discovers two enormous Transformer-like robots that Tony has been unable to activate. After studying their systems, Y/M immediately notices something Tony missed. Within minutes, she manages to establish a connection and brings both online.