Famous for playing Gabriela "Gabi" Rodriguez on the long-running American children's series Sesame Street, she is also notable for her work in movies such as Wishful Thinking and Gloria.
She made her television debut at the age of eight in a November, 1993 episode of Sesame Street.
Aside from her acting career, she studied ballet and hip-hop dance.
She was born and raised in New York City and is of Puerto Rican descent.
Casado took over the part of Gabi when Gabriela Manzano, the daughter of Sesame Street actress Sonia Manzano, decided she no longer wanted to play the role.