The main protagonists of Brave Exkaiser, the 1990-to-1991 first entry in the 90s-begun franchise co-created by manufacturer Takara and animation studio Sunrise, are humans and mechanical beings from the planet Kaiser Star. They face off against evil mechanical space pirates known as Geisters, who are wanted criminals and seek the treasures on Earth.
Hoshikawa Family
The are:
Siblings
: Voiced by Kumiko Watanabe
Student of Asahi-Dai Elementary School 3rd Grade Class B. He acts as a member of Kaisers starting with having witnessed Exkaiser in garage in his house. he can talk with Exkaiser even in the faraway place through the communication machine of "Kaiser Brace". He also likes sports, as he wants to be a baseball player and join soccer club. : Voiced by Chie Kōjiro Elder sister of Kouta. She is a quick and very active girl.
Parents
: Voiced by Tomomichi Nishimura
The father. He is the editor-in-chief of Tōto Newspaper. He has strong journalism ethics, yet he still prioritizes family although work stresses him out (hence berating Tokuda). He is also a smoker. : Voiced by Ai Sato The mother. She is rarely surprised or frightened unless directly provoked.
Others
: Voiced by Masahiro Anzai → Naoki Makishima
The pet Chow Chow's crossbreed of the Hoshikawa family. Only he is another friend of Exkaiser alongside Kouta.
Friends and Allies
: Voiced by Chisa Yokoyama
Kouta's girlfriend. A sweet and kind girl that lives with her older brother, Sho. The Hoshikawa Family is very friendly with her. : Voiced by Chiaki Morita Kouta's classmate. His parents are rich and he often likes to show off their luxury. He is also a selfish coward who tries to woo Kotomi. : Voiced by Koichi Yamadera Journalist for Tōto. He and Jinichi have the relation like the family. He is very determined for a good scoop, but his own stupidity and luck backfire on him. : A female news reporter for Kanto TV who appears throughout the series, often beating Osamu to big stories. Dino Geist often uses her reports for plotting his schemes. Near the end of the series her first name is revealed to be .
Space Police Kaisers
The are mechanical energy beings that came from the planet Kaiser Star. All average ages are 12,000 years old which is about 20 years old in the terrestrial age.
Exkaiser
: (Voiced by Sho Hayami) : Leader of the Space Police Kaisers who assimilates a sports car which is privately owned by the Hoshikawas on Earth. Only Kouta and Mario are friends with Exkaiser so that his presence on Earth can stay hidden from family, friends and other civilians. His powered up transformation exchanges the normal appearance of his chestplate for a lion's head motif. His weapons and abilities are: Weapons Spike Cutter Jet Boomerang Photon Ring Abilities Impact Crash Flaming Nova Breast Beam
Auxiliary units
: A carrier vehicle that transforms into a flight mode or into a trailer that can be pulled by Exkaiser's car transformation. : A jet that can transform into a trailer that may be pulled by Exkaiser's car disguise, or into a seldom used face-less humanoid form known as .
Combinations
: (Voiced by Sho Hayami) : Exkaiser's first - for this combination, he is combining with King Roader. His powers, abilities and weapons include , Kaiser Shot, Kaiser Wing Blade, Kaiser Flame, Kaiser Beam, Kaiser Blaster, and the finisher. : (Voiced by Sho Hayami) : Exkaiser's second Gigantic Combination when he combines this time with Dragon Jet. His weapons and abilities are , Dragon Shooter, Dragon Anchor, Dragon Boomerang, Dragon Tonfa, Dragon Blaster, Dragon Cannon, Archery Sword, Rocket Blaster, Dragon Beam, Dragon Thunder, and the finisher. : (Voiced by Sho Hayami) : This combination is formed when Exkaiser combines with both of his auxiliary mecha, King Loader and the Dragon Jet, simultaneously through When he uses his new and improved Kaiser Sword (combined with the Dragon Archery), he can initiate his finisher. Other attacks include: Great Flame, Great Flasher, Great Tomahawk, Great Cannon, Great Blaster, and Great Thunder