According to the T-Buster team, he does his homework diligently but isn't very good at studying. He has poor athletic nerves and often suffers unfair treatment during PE class. He is a timid, ordinary elementary schooler who doesn't like to stand out, but he suffers all sorts of physical and mental hardships simply because he shares the same name as the villain, King Gong-dae. He uses the Buster Gun combiner to merge the T-Buster team.

The leader of the T-Busters. A human-shaped figure. He integrates into the T-Fighter jet, which forms the upper body of the T-Buster when combined. He is incredibly hyperactive and distracting.

The communications officer of the T-Busters. A human-shaped figure. He integrates into the T-Beetle, which forms the left arm of the T-Buster when combined. He is very timid.

The sniper of the T-Busters. A human-shaped figure. He integrates into the T-Drill, which forms the right arm of the T-Buster when combined. He has charisma and a slightly cute side.

The medic of the T-Busters. A human-shaped figure. She integrates into the T-Drone, which forms the back of the lower body of the T-Buster when combined. A total mad scientist.

The heavy weapons specialist of the T-Busters. A human-shaped figure. He integrates into the T-Tank, which forms the lower body of the T-Buster when combined. He is kind-hearted. He is constantly muttering that he's hungry.

A fat and ugly middle-aged man. The final boss. The contractor for the X-Busters. He uses the Buster Gear combiner to merge the X-Busters.

The leader of the X-Busters. He integrates into the X-Rider jet, which forms the upper body of the X-Buster when combined. A character who always speaks politely.

The trainer of the X-Busters. A human-shaped figure. She integrates into the X-Combo, which forms the arms of the X-Buster when combined. She has a prickly personality. Notably, the X-Combo has a revolver on one arm that fires various shells and nets, while the other arm is equipped with a saw blade to cut enemies or fire the blade itself.

The cook of the X-Busters. A human-shaped figure. He integrates into the X-Crane, which forms the lower body of the X-Buster when combined. Contrary to his scary appearance, he is very kind.