Publication Information
- Gavan : Ichijouji Family
- Japanese :
- Origin : Planet Bird
- Led By : Space Sheriff Voicer
- Season : Uchuu Keiji Gavan
Space Sheriff Voicer
- Space Sheriff Voicer
- Origin : Planet Bird
- Type : Former Space Sheriff Of Earth
- Family :
- Tamiko Ichijouji : Wife
- Retsu Ichijouji : Son
- Potrayer : Sonny Chiba
- Space Sheriff Voicer is Gavan's father; he was a former space sheriff of Earth, betrayed by his fellow Hunter Killer and captured by the Makuu. He was forced to build the Hoshino Space Cannon, a weapon that can destroy a planet, but he kept the blueprints a secret even after being tortured. He was saved from imprisonment by his son Gavan. He was brought back to Dolgrian but died soon after, with the secret blueprint for the cannon written on the palm of his hand.
- Tamiko Ichijouji
- Origin : Earth (Planet Bird)
- Type : Earth Woman
- Family :
- Space Sheriff Voicer : Husband
- Retsu Ichijouji : Son
- Potrayer : Tamie Kubata
- Tamiko Ichijouji was an Earth woman who married Space Sheriff Voicer of Bird Planet. Together, they had a son.
- Main Article : Retsu Ichijouji
- Origin : Earth (Planet Bird)
- Type : Space Sheriff Gavan
- Family :
- Space Sheriff Voicer : Father
- Tamiko Ichijouji : Mother >
- Potrayer : Kenji Ohba
- Retsu Ichijouji is the son of Tamiko Ichijouji and Voicer, having lived on Planet Bird for most of his life until he is assigned the task to protect Earth against the invading Makuu Empire by donning the alias of Retsu Ichijouji. When needed, Gavan yells "Jōchaku" so the Dolgiran can encase him in Granium particles that form into his silver chrome combat suit within 0.05 seconds. When no longer needing the armor, Gavan utters the Vacuum Evaporation command for his suit to be sent back to the Dolgiran. He is an accomplished athlete and has various weapons at his disposal. Though he relinquished his position as Earth's protector to his successors, marrying Mimi after Shaider's mission on Earth was completed, Gavan battled other enemies like the Madou, the Fuuma cult, and the Zangyack Empire. During the events of Space Sheriff Gavan: The Movie, Gavan selected Geki Jumonji to succeed him as the new Gavan. He is now promoted to commander status during the events of Kamen Rider × Super Sentai × Space Sheriff: Super Hero Taisen Z
- Tsukiko Hoshino
- Origin : Earth (Planet Bird)
- Type : Adopted Daughter
- Family :
- Space Sheriff Voicer : Father
- Tamiko Ichijouji : Mother >
- Retsu Ichijouji : Older Brother
- Potrayer : Aiko Tachibana
- Tsukiko Hoshino is Gavan's adopted sister and was brought up by Voicer when her parents were killed by Hunter Killer. She is a very sweet girl who assists Gavan in his missions.
