The class representative of Class 2-5 at Kamui Daimon Comprehensive Academy. 14 years old. He belongs to the virtual nation of Jenock and serves as the leader of the 1st Platoon, which includes Arata Sena and Hikaru Hoshihara. Having lost two comrades to expulsion due to his own past errors in judgment, he maintains a strict attitude toward the newcomers, Arata and Hikaru, out of a strong sense of responsibility as a leader. His LBX units are Orvane and later Tri-Vine.

A 14-year-old second-year middle school student who transferred to Class 2-5 at Kamui Daimon Comprehensive Academy with dreams of becoming a professional LBX player. He barely met the admission requirements with only three tournament victories, one of which was reportedly a stroke of luck due to an opponent's mistake. While his technical knowledge and skill in LBX battles aren't particularly high—often taking reckless actions like engaging in melee combat with a long-range unit—he possesses excellent intuition and creativity. Regarding his future, his father dismissed his dreams, saying "LBX is just a game" and "the professional world isn't that easy," prompting Arata to vow to become a pro and earn his father's respect. His LBX units are Dot Phasor and later Dot Blastrizer.

Like Arata Sena, he is a transfer student in Class 2-5 at Kamui Daimon Comprehensive Academy. He belongs to Jenock and is a member of the 1st Platoon alongside Arata. He is exceptionally skilled in LBX battles and is known as a genius player with seven tournament victories, including the previous year's Artemis. Though his beautiful features often lead people to mistake him for a girl, he is a boy. His LBX units are Val Sparos and later Val Diver.

A student in Class 2-1 belonging to the Rossius Federation, the largest virtual nation in the Second World at Kamui Daimon Comprehensive Academy. His trademark is his purple gloves. Possessing genius talent as an LBX player, he is considered the strongest student at the academy. While he initially appears cool and blunt, he is a man of character who uses polite speech with elders and shows deep compassion for others. As the leader of the Rossius 6th Platoon, he enjoys immense trust from his subordinates and is a favorite of the principal. His LBX is the Gaunta Yzelfer.

A boy who serves as the leader of the 1st Platoon for the virtual nation Harness in Class 2-3 of the middle school division. He is also the class representative, possessing a calm and honest personality. Because he performs his duties faithfully and is considerate of those around him, Shisui often teases him for being a "model student" (though Shisui is a similar type, he often handles intelligence missions, so the comment is likely light irony). He guides Guest as a captain and acts like a guardian toward the troublesome Suzune, despite the headaches she causes him. First person: I (polite, steady). Second person: you (respectful). His LBX is the DC Offencer.

A player in the 1st Platoon of Harness. She speaks with a regional drawl (Kansai dialect). She has a hot-headed personality and refers to herself as "uchi." Her behavior is somewhat poor, as she often oversleeps or dozes off in class, which frequently worries her platoon leader, Kagetora. While her personality often makes her a troublemaker, she has a strong desire to become a professional LBX player; she once stormed out in a rage upon learning the truth about the Second World. First person: I (casual, regional). Second person: you (blunt). Her LBX is the Siren (previously DC Aerial).