Galactica 1980
Like many of the stars of the original series, Richard Hatch was not available to work on the short lived sequel series Galactica 1980. As a result, the series was set many years in the future of the original show, and featured a grown Boxey now known as Captain Troy. Troy comments early in the first episode of Galactica 1980 that he missed both of his parents, and displayed a picture of Serina and Apollo, suggesting Apollo had died years before.
Read more about this topic: Captain Apollo