Santino Fontana is an American actor and singer, best known for his work in theater, television, and film. He gained widespread recognition for his role as Gregory in "Crazy Ex-Girlfriend", a popular television series. Fontana has also performed on Broadway, earning acclaim for his performances in productions like Cinderella and The Importance of Being Earnest. In addition to his stage work, Fontana has appeared in various television shows and films, showcasing his versatility as a performer. He has lent his voice to animated characters, including Prince Hans in "Frozen", further expanding his reach in the entertainment industry.