Lucas Ozera was the father of Christian, husband of Moira and brother of Tasha. He and his wife turned Strigoi. Before they were killed, they waited for the right moment to change Christian into a Strigoi. He and his wife wanted thier son to choose to be Strigoi when the time was right and join forces with them until Tasha came and tried to defend the defenseless boy and that is how she got her scar.