Sean Grandillo is an American actor, musician, and singer who portrays Brett on The Real O'Neals. He is also known for his roles as Otto in the 2015 Broadway revival of Spring Awakening and Eli Hudson in MTV's horror series Scream.
Sean Grandillo was raised in Aurora, Ohio and received his education from Aurora High School. He pursued a higher education at Ithica College, but dropped out when he was cast in Deaf West Theatre's production of Spring Awakening in L.A. He is currently in a relationship with Actress Kimiko Glenn.
In 2014, Grandillo auditioned for Deaf West Theatre's production of Spring Awakening while on a break from college, and moved to Los Angeles two weeks later to star in the musical. He stayed with the company as the show transferred to Broadway, playing the double bass in the band and providing the Voice of Otto, while deaf actor Miles Barbee portrayed the role of Otto Lämmermeier in sign language.
In 2015, he guest appeared as Cooper (the boyfriend of Indiana Evans' character) in two episodes of the first season of ABC's crime drama series Secrets and Lies. On October 15, 2015, Grandillo released his first single, "New".
In January 2016, Grandillo guest starred in a Mariska Hargitay-directed episode of NBC's legal drama series Law & Order: Special Victims Unit as Chris Roberts, a high school senior accused of sexually assaulting a freshman. He then appeared in Justin Kelly's gay porn drama film King Cobra, alongside James Franco. In March 2016, he was cast in the recurring role of Eli Hudson in the second season of MTV's horror series Scream. In July 2016, Grandillo reported via Twitter that he would be releasing his first EP in September 2nd. In August 2016, Grandillo released his second single, "Why Is It so Hard to Change". In September 2016, Grandillo released his first EP also named, "Why Is It so Hard to Change".