Who is Riri Williams? Well, like what Tony Stark did for Peter Parker in Captain America: Civil War, the Tony Stark of the comics is aware of Riri’s existence. The 15-year-old prodigy is a student at M.I.T who built her own Iron Man suit. With Civil War II (this time he is at odds with Captain Marvel over the use of psychic predetermination to battle villains before they act – think Minority Report but with superheroes) currently going on, Stark needs some downtime and hands over the name of Iron Man to Riri.
Source: Geeks of Doom