Guest stars in this episode included Robert Bauer, who had previously been in a band with Michael Dorn, as Kunivas. Stuntman Dennis Madalone made his second appearance in "The Next Generation" with this episode, having previously appeared earlier in the season in "Where No One Has Gone Before". He would continue to appear as various crewmen through the rest of the series. "Heart of Glory" was the only appearance in "The Next Generation" for actor Vaughn Armstrong. He would, however, go on to play a further eleven different roles in the "Star Trek" franchise, including as the recurring character of Admiral Maxwell Forrest in "".