(written from a Production point of view)
Born on the Caribbean island of Saint Vincent in the West Indies, Seales first gained recognition for his role as cop killer Jimmy Lee, aka "Youngblood", in the 1979 film The Onion Field. In this acclaimed crime drama, Seales starred opposite future Star Trek alumni John Savage and Ronny Cox; the film also featured the likes of Phillip Richard Allen, K Callan, John de Lancie, Richard Herd, Christopher Lloyd, and Michael Pataki. However, his most famous role is that of business manager and Stratton family friend Dexter Stuffins on the hit 1980s sitcom Silver Spoons.
Seales first appeared to TV audiences in a recorded 1974 Broadway production of William Shakespeare's King Lear, co-starring Star Trek: Deep Space Nine actor Rene Auberjonois. Seales went on to perform in direct-to-video productions of Shakespeare's plays Macbeth and The Taming of the Shrew in the 1980s. The former (released in 1981) also featured Alan Oppenheimer, while the latter (1983 co-starred Bruce Davison and Bill Erwin; both featured Jay Robinson.
In 1980, Seales was seen in the mini-series Beulah Land, along with Jonathan Frakes, Michael Sarrazin, and Robert Walker, Jr.. The following year, Seales had a supporting role in the Walter Hill war drama Southern Comfort, starring Keith Carradine. And in 1982, he appeared in three episodes of Hill Street Blues, starring James B. Sikking, Barbara Bosson, and Barbara Babcock. He then had a regular role as Lorenzo Hollingsworth on the sitcom Amen during the show's first season (1986-87) and made guest appearances on Growing Pains and Wiseguy before dying of AIDS at the age of 37.