The Queen Mother was Zan and Vilandra’s mother on Antar. She appears in one scene at the end of “Destiny”, in a recorded message that Max, Tess, Isabel, and Michael see and hear when they trigger the orbs in the Pod Chamber. Liz is also there and hears the message, and that drives her away from Max through the first part of season 2.
The message from the Queen is really the first substantial thing we find out about the aliens’ home planet. It establishes the idea that our teenage aliens are hybrids, with human DNA as well as alien, and that they are the reincarnation of alien royalty. She begs them to fight her enemies, aliens who have come to Earth after them, and to come home to her when they can.
The Queen Mother is played by Genie Francis, the wife of Jonathan Frakes, who was one of the show’s executive producers and episode directors, and appeared as himself several times.