Kyle is the father of Isaac and the husband of Dora. After attempting to help Felix and his parents from the raging river in the prologue of Golden Sun, the four of them are presumably dead from the large boulder crushing them. We learn later in Golden Sun: The Lost Age That Felix and Jenna's parents and Kyle are still alive. Taken by Saturos and Menardi to the village of Prox. The three of them would be able to return to Vale once Felix lit all four lighthouses.