Male. A low-floor bus, but he's a CNG (Compressed Natural Gas) model, not electric. Consequently, his engine is a bit noisy. He has a charismatic, handsome design, but he's terrifying when angry. 8th grade.

Male. Cute and surprisingly handsome. He is Smart 110G's younger brother and fights with him constantly. He's a bit timid, gets flustered by the Vixen's behavior, and cries a lot. He is the youngest and an electric low-floor bus. 2nd grade.

Male. In human terms, he's practically a grandfather. He's a semi-large bus, often used as a village bus or daycare bus. Despite his age, he plays a lot of pranks. 67 years old (???).

Male. An express bus with a wide body. He's the most mischievous among the express buses. He's a Zyle Daewoo bus (a company that has since disappeared from Korea and Vietnam, leaving only Tata Daewoo). 11th grade.

Male. Elec City 1's older brother. He's very playful. He tries to prank his younger brother, but it never works on Elec City 1. 9th grade.

Female. Very shy and timid. She is incredibly pretty and cute. She's very wary of strangers. 7th grade.