Royce Dwayne Applegate (December 25, 1939 – January 1, 2003) was an American actor and screenwriter who was first billed as Roy Applegate.

[1] Born in Midwest City, Oklahoma,[1] his most visible role was that of Chief Petty Officer Manilow Crocker on the first season of the television series seaQuest DSV.

[2] Applegate portrayed Deputy Crawford in Stir Crazy (1985).

[2]: 1021  In that year, he also appeared in two episodes of Diff'rent Strokes, playing family man-turned-kidnapper Donald Brown, a father who kidnaps character Sam McKinney in order to replace his own dead son.

On New Year's Day 2003, Applegate died in his Hollywood Hills home in a fire just one week after his 63rd birthday.