Julen Jon is the only son of the former captain of Athletic Club de Bilbao and his wife, Elsa Landabaso. He is 187 cm tall, has a very fibered body and his mane seems to fly on the pitch.

His sympathy and closeness are two points in his favor to continue with the Julenmania. The 19-year-old plays for SD Amorebieta on loan from Real Madrid Juvenil A. He turns 19 tomorrow.