Itetsu Kamijou is a character from the Cybuster anime, where he serves as a supporting figure within the group of protagonists. He is characterized by his role as an older, grounded presence among the younger pilots. Physically, Itetsu is depicted as a male character with gray eyes and gray hair worn at neck length, indicating an older age relative to the core team.

In terms of personality, Itetsu comes across as pragmatic, level-headed, and highly dependable. He often takes on a supportive, almost parental role within the group, focusing on logistics, safety, and the well-being of his companions. He is not a primary frontline fighter but demonstrates considerable courage and a strong sense of responsibility. His motivations are rooted in the protection of his team and ensuring they have a stable foundation to operate from. He is committed to their mission and displays loyalty, often prioritizing the group's long-term survival over reckless action.

Within the story, Itetsu’s role is that of a key support member and advisor. He is often seen alongside the mechanics and other non-pilot personnel, contributing to the group's operations from a more logistical or strategic angle. In one instance, he assists in the repair and enhancement of the Balcione, a mecha piloted by Lyune, adding an electromagnetic cannon to its arsenal. His importance is highlighted during critical moments of crisis. As the situation on Earth becomes dire due to dimensional instability, Itetsu is present at the mountain base. When the main pilots, led by Ken Ando, decide to launch a desperate final assault against the Divine Crusaders, Itetsu demonstrates his steadfast nature. Ken instructs him to take everyone to a safe location, but Itetsu refuses, stating that he and the others will stay behind to protect the base, ensuring the pilots have a place to return to after the battle.

Key relationships include his connection to the younger pilots, particularly Ken Ando, for whom he acts as a reliable elder. He also shares a significant, if subtle, link with Masaki, a character from another world. Itetsu is known to play the harmonica, and Masaki recognizes the tune he plays as one he has been humming for as long as he can remember, establishing an unexplained but notable connection between the two. He also has a relationship with Mizuki Kamijo, who shares his family name, suggesting they are likely related.

Itetsu's development is subtle but present. He evolves from a background support figure into a crucial pillar of strength for the group’s morale and survival. His decision to hold the base in the final episode signifies a growth in his role, taking on the responsibility of ensuring his found family has a home to return to, rather than simply following orders to flee. One of his most notable abilities is his mechanical aptitude, as seen when he personally upgrades the Balcione. Beyond this, his primary assets are his wisdom, unwavering reliability, and his ability to offer crucial emotional support and practical stability in the face of apocalyptic events.