Stavros Cassadine: The son of Mikkos and Helena Cassadine, Stavros decided he must have Laura Spencer for himself, and thus he abducted her to Greece and made everybody think she was dead. While gone, he fathered a child with Laura, Nikolas. Laura ultimately escaped, and though Stavros followed her to Port Charles, Luke killed him. Or did he? Years later, Helena revealed a plot wherein she resurrected her cryogenically frozen son (how's that for a mother's love), and he was twice as crazy! After once again terrorizing Laura, Luke killed him, this time for good.