Zed
Zed is the main character in Kiba. He is an unsatisfied, unfocused 15-year-old boy living in Calm. One day, he finally gets his chance at a new life when a mysterious gust of wind guides him to a small space/time crevasse. It leads him to Templer, a land full of "magic", crystals with strange powers called shards, and monsters called spirits. However, this place is torn by war.
Amil Gaoul
A member of the 6 "Key Spirits". When all of the Key spirits are united, they have the power to destroy or heal the world. Its rightful, chosen owner is Zed. The previous owner was his mother Sara.
Roia
Roia is a 16-year-old girl from Tusk, living in Templer. She is the disciple of the elder sage Jiko, who rescued 6-year-old Roia from Tusk. She was to be killed after it was predicted that she would kill her father, Morocco. Therefore as growing up in Templer, she was falsely told to be an orphan. She is a new-found friend of Zed.
Jiko
Jiko is a 79-year-old man and is one of six sages of Templer. Jiko has a rather calm and wise personality, in which he regularly performs rather sagely tasks such as meditation and fishing, while equipped with a mind of void. Jiko is the teacher of Roia. After Zed arrives, Jiko as well acts as his mentor, and gives him advice on many occasions.
Robesu Redondo
His name and mansion "Redondo House" all inherited from his father, Altajid Redondo. He is a princely figure living in Templer. He recently became the Shard Champion after winning the Shard Casters tournament. For fun he wears a mask, and under the name "No Face", likes to rob the townspeople of their riches. He wishes to know who is stronger between Dumas and himself, but was denied the chance when Dumas let Zed fight in his place against Robčs in the tournament.
Mikki
A baker by trade and a former apprentice to Dumas. He is a friend of Roia and Zed. He is given Dumas' spirit after Dumas was killed and had serious difficulty controlling it.
Dumas Schuramux
Templer's previous Shard Champion, a title given to the strongest Shard Caster in the country. Even though he held the prestigious title, he works as a farmer. He also, had turned the basement of his house into a hospital for those of the country of Zymot who have been cast into exile, but when they started attacking the castle he helped to defend it against them.
Noa
Noa is Zed's friend from Calm. He is sickly, but nevertheless insists on pursuing his goals whole heartedly. After Zed goes through the portal to Templer, Noa is eventually teleported to a militaristic land called Neotopia and begins making friends while staying with Carter, the man who found him, and his wife.