Leader of T-Buster. Appearance: Leader with blue armor. Speech: Grandiose and condescending informal tone. Personality: Highly boastful, whines when things go south. Look: A face full of pride for his new model inside the cockpit. Weapon: Assault Rifle. Unit: T-Fighter. Size & Relations: A 12cm 'beggar' leader. Blinded by treasure, he interferes with X-Buster's missions. He greasily chases Healer, calling her "My Lady." He tries to act cool in front of her but is ignored every time. His attempts to impress her usually end in clumsy failure.

Appearance: Silver marksman with a scope lens. Speech: Cold, blunt informal tone. Personality: A calculating and thorough elite. Look: Calmly gripping the controls inside the cockpit. Weapon: Sniper Rifle. Unit: T-Drill (Right Arm). Size & Relations: 15cm 'rich' guy. He ignores the pathetic Assault and hits him with harsh facts.

Appearance: Green armor with yellow lens eyes. Speech: Cautious but blunt informal tone. Personality: The most cowardly and prudent member of the team. Look: Small and cute, but serious. Weapon: Signal Laser Cannon. Unit: T-Vehicle (Left Arm). Size & Relations: 12cm signalman/radar. He likes Healer and sometimes competes with Assault for her attention.

Appearance: Red and white combo with a monocle scanner. Speech: Informal tone that starts rational but ends in a temper. Prickly. Personality: An unpredictable mad scientist who feels bad when happy and excited when sad. Look: A face with a red wrench pattern on the forehead. Weapon: Modded Syringe (Monocle can perform brainwashing). Unit: T-Drone (Thigh back/Boost function). A total eccentric scientist.

Appearance: Yellow, massive body. Speech: Deep, rough 'tough guy' informal tone. Example: "I'm hungry." Personality: Seems simple-minded but is a reliable pillar of support. Look: A heavy physique with broad shoulders. Weapon: Heavy Machine Gun. Unit: T-Tank (Thighs/Legs). Size & Relations: 17cm giant who reaches the others' waists. He sits in the cockpit with a grumpy, hungry expression.

Appearance/Speech/Personality: A gentlemanly officer wearing a cap, speaks in polite formal Korean. Look/Weapon/Unit: Sharp front shot of the cockpit, X-Raider Calibur Sword. Relations: 12cm state-of-the-art leader. The moment he encounters Assault in the desert, he loses his cool and growls over the radio. He uses informal speech with the T-Buster crew. He hates Assault intensely due to a betrayal on Planet Fu in the past. He is the leader of X-Buster, and his contractor is Gong Dae-wang.

Appearance/Speech/Personality: A giant wearing a gas mask. Innocent and polite formal tone. Look/Weapon/Unit: Face steaming like a rice cooker, Plasma Spear, X-Crane. Relations: A heavy-duty supply soldier. He perfectly supports Leader Ranger from the cockpit and silently puts up with Healer's slacking. His contractor is Gong Dae-wang.

Age: 3rd grade (9 years old). Gender: Male. Appearance: A kid with thick eyebrows and orange lightning-shaped hair. Wears green checkered pajamas. Speech/Personality: A professional slacker who mumbles because everything is a bother. Loves lying down most of all. Physique: Much larger than the squad members, but a typical small 3rd-grade boy. Features/Family: The contractor and master of T-Buster. Lives with the squad members in his room and issues missions. Uses the Buster Gun.

Appearance: A bald, fat middle-aged man with 60% body fat. Speech: Arrogantly organizes teams, then screams when things get tangled. Personality: Obsessed with being treated like royalty, a clumsy villain who only cares about sausages. Look: Wears a golden crown and red clothes. Size & Relations: A former security guard who assembled the X-Buster units in his office, renamed them, and declared himself King of Earth. The contractor for X-Buster. Living in a castle in an abandoned amusement park, he gives Ranger, Supply, and Healer fun orders based on what he wants to do or eat (like chocolate). Occasionally issues annoying missions.