 Ávalos acted with the Lincoln Center Repertory Theater.His Broadway credits include "Narrow Road to the Deep North" (1972), "The Good Woman of Setzuan" (1970), "Beggar on Horseback" (1970), and "Camino Real" (1970).He joined "The Electric Company" in season two, most notably playing Doctor Doolots (a play on "Doctor Dolittle").