Aya Jinguji (ジングウジ・アヤ Jingūji Aya?) is a oceanographer who first appeared in the Ultraman Mebius and the Ultra Brothers film when Mirai Hibino visited her lab at TPC HQ, and later in an episode of the Ultraman Mebius TV series in episode 43. She had acquired a member license of GUYS at the age of 14.