Born in Jehanna, Ewan is a sage-in-training with much potential, according to Saleh. He is the third and final Trainee unit, more exactly a Pupil.
In Eirika's route, Ewan is seen in Carcino, where Pablo starts a coup and attempts to find and kill both Innes and Klimt. Tethys has Ewan stay in the local inn until the battle subsides, much to his disappointment. After Pablo and his army is routed from Carcino, Ewan introduces himself to Eirika and offers her a way into Caer Pelyn, which she accepts.