He is best known for starring in the original cast of Jacques Brel is Alive and Well and Living in Paris onstage and as Paco in the film Short Eyes (1977).

[1] Elliott was born Eliezer Santiago Solis in Santurce, Puerto Rico, and grew up in New York City's East Harlem area[2] where he appeared in a community center production of Oklahoma!

On TV, Elliott played Eduardo Fernandez, father of main characters Alex and Gaby, on the PBS children's show Ghostwriter.

Elliott also appeared on Broadway in City of Angels (1989) and Marie Christine (1999)[7] and off-Broadway and regionally in Jacques Brel is Alive and Well and Living in Paris, Cyrano De Bergerac, Senor Discretion Himself, Teresa's Ecstasy, Hamlet, Who's Afraid of Virginia Woolf?, and Man of La Mancha.

A lifetime member of The Actors Studio, Elliott received a 1998 ALMA Award for Outstanding Latino Cast for PBS’ Foto-Novelas.