Gus Halper is an actor. In 2013, he made his acting debut in the short film called Rémy. The following year, he had his first television appearance in the TV movie Galyntine. His first movie role was as an extra in Ricki and the Flash. In 2015, he played recurring character Sergio Tedesco in Public Morals. He later appeared in the feature film Goat. After guest roles in Power, Chicago P.D., and Mercy Street, he became known for his role as Erik Menendez in Law & Order True Crime. He then starred as Mikey Scaramucci in the TV series Happy! His next acting roles were in the films Cold Pursuit and Maine. Recently, he played Neal in the TV show Jett and Joseph in Apple TV+’s Dickinson.