Male Daepung Elementary School He loves baseball so much he'd jump out of bed for it even in his sleep. He was nervous because their first opponent was Baekho Elementary, but he's the type to overcome it with the belief that they can win. He asked the principal of Daepung Elementary to form a baseball team, and the principal agreed to do so if they could achieve one win in a tournament.

Female Daepung Elementary School She has strong pride and, despite having only recently started baseball, she is better than most boys. Even though her father, a former player, strongly opposed her, she never gave up on training and rose to become the ace of the Daepung Elementary baseball team.

Male Daepung Elementary School He isn't particularly fond of the baseball team's ace, Jung Jiyu. He is also a quite talented student; although he joined because his pride was wounded, he always works hard.

Male Baekho Elementary School One of the three aces of Baekho Elementary. He transferred to Baekho Elementary from his previous school, Mirae Elementary. Unlike the students who look down on Daepung Elementary, he doesn't pay them any attention at all.

Male Baekho Elementary School One of the three aces of Baekho Elementary along with Zhuge Seungri and Eom Taeseok. Like the others, he doesn't look down on Daepung Elementary—he simply has no interest in them. Being part of the national championship team, his skills are outstanding.

Male Baekho Elementary School One of the three aces of Baekho Elementary along with Zhuge Seungri and Kim Jeongho. Like the others, he doesn't look down on Daepung Elementary—he simply has no interest in them. Being part of the national championship team, his skills are outstanding.