 At the same time, he also was the first of three actors to portray the title character in the short-lived ABC TV science-fiction adventure series "Buck Rogers", which ran from April 15, 1950, to January 30, 1951.In the mid-1950s, he had a major role in the daily/noontime CBS television soap opera "Valiant Lady" as Hal Soames, the married love interest of the widowed title character.Hammond was perhaps best remembered for providing the voices of Mumm-Ra, Jaga, and other characters on the 1980s animated TV series "ThunderCats", and for being the voice of villain Mon*Star on the 1980s animated TV series "Silverhawks."