 After Zan's death, his people used his DNA and the DNA of human donors to create two sets of alien/human hybrids or clones of him and the rest of the Royal Four of Antar.These include Isabel Evans (Vilandra, Zan's sister), Michael Guerin (Rath, Vilandra's betrothed husband and Zan's second-in command), and Tess Harding (Ava, Zan's bride).The clones were sent to Earth to hide them from their enemies especially Kivar who killed Zan & co back on Antar.