A 7th-grader attending Seiho Academy. An only child, his family owns the shop Iori Models, and he's been a Gunpla fan from a young age. Both his building technique and his Gundam knowledge put many adults to shame.
However, he's a poor Gunpla Battler with a long record of washing out in the first round.
Tatsuya YukiThis 9th-grader, president of both Seiho Academy's student government and its modeling club, is adored by the student population Talented at Gunpla building and battle, he made it all the way to the world championships of the last Gunpla Battle tournament.
He's also known as "the Crimson Comet".
China KousakaA 7th-grader in Seiho Academy's art program, and a class rep. Her family runs the Kousaka Restaurant.
Seeing Sei Iori's enthusiasm for Gunpla building, she takes up the hobby herself in her own thoughtful, reserved style.
Reiji A mysterious boy Sei Iori encounters in town. He's overbearing, selfish, quick to anger, and lacking in manners.
Thrust into the Gunpla Battle cockpit, he shows off incredible piloting skills on his first try.