|Relationships|| Rafe McCawley, Father, deceased|
Pilar McCawley, Mother, deceased
Quentin McCawley, Brother, deceased
Christie Tarr, Sister, deceased
Alak Tarr, Brother-in-law
Luke Tarr, Nephew
|Health||Deceased: in "Pilot" he was murdered by Ben.|
"Brothers in Arms"
|Mentioned|| "Down...Dead Men Go"|
"The Serpent's Egg"
Luke McCawley was the oldest son of Rafe McCawley. He is the namesake of Chistie's son despite Luke despising his nephew's father.
He appeared very protective of his younger sister Christie Tarr when she began dancing with Alak Tarr. He started a fight with the young Castithan before being called off by his younger brother. He leaves to meet with Ben in the woods but is betrayed and killed. It seems that he was involved with Mayor Nicky's search for the Kaziri.
Luke appeared in Quentin McCawley's mind, telling him what he wanted to hear.
Luke is said by Nikki to have hated his father for what he did to his mother.