Kivar is a recurring character on WB sci-fi series Roswell. He is portrayed by Spence Decker and Miko Hughes.
Kivar is the nemesis of King Zan and plotted his demise in the early 1940s. In good faith, his lover, Vilandra, let Kivar into the palace to speak with the King and Kivar betrayed her trust, killing Vilandra's family. Upon having discovered the creation of the 8 hybrids, Kivar seeks to kill off the royal family for good, but reunite with his love, Vilandra, who was also murdered in the ensuing battle when Kivar invaded the palace. Kivar is described as a ruthless, heartless warlord, who has kept the Five Worlds in the throes of battle since the 1947 crash.