Ryan McCartan is an American actor and singer. He is best known for his role as Diggie Smalls in Disney’s “Liv and Maddie”, Playing J.D in “Heathers the Musical”, and as Brad Majors in the Fox made-for-tv remake of The Rocky Horror Picture Show, “Let’s Do The Time Warp Again”.

McCartan was also part of the now disbanded The Girl and The Dreamcatcher with Liv and Maddie costar and ex-fiance Dove Cameron, and can currently be seen playing Fiyero in “Wicked” on Broadway.