Initially, Parros acted solely in theater. Eventually, he found minor success on screen. In 1984, Parros landed his first television role as Michael, Tootie's cousin, in The Facts of Life. His first regular series role was on Knight Rider in 1985, playing "RC3", a.k.a. Reginald Cornelius III, the new mechanic (and sometime partner to Michael Knight) who worked on KITT; he appeared in the fourth and final season of the series.