Gained fame as Patrick in The Perks of Being a Wallflower alongside Emma Watson. They have also starred as The Flash in Justice League and as Credence in Fantastic Beasts and Where to Find Them. Their other notable works include City Island, Trainwreck, and Madame Bovary.
They sang opera music when they were six years old. After years of honing their skills, they sang in Philip Glass's opera White Raven.
They played a brief role in the television comedy Californication.
They are the son of a managing director at Hyperion publishing and Workman publishing. Their father Robert served as the senior VP of Disney's adult book publishing house.