Hideto, whose full name is Hideto Ohboshi, serves as the co-pilot of the titular super robot in the anime. Before joining the Promete Project, he worked as a stunt pilot, a career that provided him with the practical flying skills necessary for his later role. He is the son of Doctor Ohboshi Ryuutarou. Physically, Hideto is characterized by his black hair and brown eyes.

Within the narrative of Planet Robot Danguard Ace, Hideto is a supporting character who secures one of the most coveted and dangerous positions in the Earth's defense force. The robot is designed for dual piloting, and the selection process for its pilots is extremely rigorous and hazardous. Many candidates are injured or lose their lives during training or in combat. Hideto ultimately earns his place as a co-pilot, a testament to his durability and skill, and is described as being fortunate to have survived the process to become a member of the main crew.

While detailed information about his personal motivations and individual personality is scarce, his role is defined by his function within the larger mission. He operates alongside the primary pilot, Takuma Ichimonji. The dual-pilot setup of the robot means that Hideto's responsibilities are integral to the machine's operation in battle against the forces of Chancellor Doppler. The available information describes his past occupation and his familial relationships, but does not provide substantial details regarding his internal character development, specific personal motivations beyond his duties, or notable unique abilities separate from his function as a pilot.