Jack Bayard, also known as Jack The Halloween, first appeared in Gundam the Ride - Space Fortress A Baoa Qu, an attraction at Fuji-Q Highland in Japan. He also featured in the film Gundam Neo Experience 0087: Green Divers and various art books. Additionally, he played significant roles in numerous Gundam-related video games.
Born on Earth, Jack Bayard joined the Earth Federation Army as an officer cadet in U.C. 0077 and was sent to the Earth Federation Officer School. He graduated in U.C. 0079 and was commissioned as a lieutenant. During the One Year War in U.C. 0079, the Earth Federation Forces initiated a training program for regular army soldiers to become mobile suit pilots. Jack, one of these new MS pilots, demonstrated exceptional technical aptitude and piloting skills. On December 20, he was promoted to Second Lieutenant and later served alongside Adam Stingray on the Salamis Kai (SCRT-229 Suruga). As captain of an MS squad, he received his own RGM-79 GM, adorned with his personal "Jack-o'-lanterns with a sickle" emblem, earning him the nickname "Jack The Halloween".
On December 24, Jack participated in Operation Cemballo, the Earth Federation Forces' attack on the space fortress Solomon. He also took part in Operation Star One, where the Suruga was sunk when the Principality of Zeon fired the Solar Flare colony laser at the EFF fleet near A Baoa Qu. Fortunately, he survived along with Adam aboard the Suruga's escape launch. He later commanded an MS platoon aboard a Waj-class Earth Federation transport. After the war, Anaheim Electronics hired him in U.C. 0082 as a test pilot for the RX-78GP00 Gundam GP00 "Blossom".
Jack later appeared in the manga École du Ciel. Unlike Kamille Bidan, who joined AEUG as a civilian, Jack entered AEUG as a professional Federation MS pilot. In U.C. 0087, he was sent to the lunar city of Anman to test the capabilities of a captured Titans RX-178 Gundam Mk-II. He held contempt for and clashed with Marie Albertia's "pirates", who were also involved in the Gundam testing. During the Gryps Conflict, he served as the leader of the Halloween MS squad aboard the Irish-class battleship Zwickbau.
(Source: Gundam Wiki)
