Lukes real name is actually Rinaldo and he is the son of Brand and the sorceress Jasra. Luke was friends with Merlin for many years on the shadow Earth although Merlin had no idea of his true identity. At first, Lukes main focus was revenge for the death of his father, and attempted to kill Merlin every April 30th (the date he learned of his fathers death). However, he eventually became good friends with Merlin. Luke has traversed the pattern in Tir-na Nog'th and can traverse shadow.