On stage from 1960, towering African-American actor Rockne Tarkington has been most often seen in movie and TV adventure fare. Those who were weaned on the Saturday morning kiddie shows of the 1960s will remember Tarkington as Morgan, the fearless islander eternally called upon to rescue hero Frank Aletter and heroine Ronne Troup in the live-action Danger Island segments of The Banana Splits Adventure Hour.
In the evening hours, Tarkington could be seen on an occasional basis as jungle veterinarian Rao on the Tarzan series. Numbering among his feature film credits are such heart-pounders as Ice Pirates (1984), Death Before Dishonor (1987) and Fists of Steel (1990). Curiously, in Kevin Costner's blood-spattered Wyatt Earp (1994), Rockne Tarkington played the relatively passive role of a stablehand. ~ Hal Erickson, All Movie Guide. 