Ray is a pilot of the Joint Earth Defense Organization and the son of Seft Waizen, the scientist who was in charge of the DIA51 Project. He is known both for his pilot skills and his hot temper, which earned him the nickname "Fervorous Fireball" among his comrades.
In the original Aleste, Ray decides to fight the Mu Plants created by DIA51 after his girlfriend Yuri Lennox is gravely injured during the plants rampage. While she is taken to the hospital Ray takes off on the AF-68030 Aleste to destroy the rogue computer. After DIA51 is destroyed Ray marries Yuri and the two have a daughter, Ellinor Waizen. Years later Ray becomes the captain of the Aleste forces, leading an expedition to explore the space. However, Ray's space vessel is intercepted and destroyed by the Vegant, leaving it to his daughter Ellinor to save Earth and avenge his death.
In Aleste Gaiden, which takes place on an alternate reality, Ray wears a robotic ninja suit to fight the people brainwashed by this reality's version of DIA51.