On Another World, the Wallingford character was a friend and confidante of Felicia Gallant (Linda Dano) and Cass Winthrop (Stephen Schnetzer).
These three characters were given much screen time in the mid-1980s, and gave Collins the highest level of fame he experienced in his career.
Originally scheduled to appear on the show for four weeks, the character's popularity resulted in a four-year stint that included a return from the dead.
[1] He also was a guest-star on shows such as Spenser: For Hire, The Golden Girls, and The Streets of San Francisco.
Late in 1987, Collins grew rapidly from his short stature,[2] which led to his fatal heart attack.