Kazumi Hasebe (長谷部 和美 Hasebe Kazumi, はせべ かずみ Hasebe Kazumi) is a 3rd Year Student of Reihou Academy and a fictional character in the Kunio-kun series. Her first appearance is in Downtown Nekketsu Monogatari, and she is the girlfriend of Yamada and warns Kunio and Riki about the Hattori Twins. She is also the Student Vice President of Reihou Academy.
- In River City Ransom, Hasebe is known as Roxy.
- This is continued in River City Ransom: Underground, which gives her sprite purple hair as a reference to her origin.
Hasebe was one of the more frequent female characters in the series, though her role varies from game to game. She seems to have feelings for Kunio, but it's a bit unclear whether she or Misako is his current girlfriend. She has usually been seen as the default girly-girl character, but in River City Super Sports Challenge: All Stars Special, she is revealed to be quite strong and a talented fighter; able to intimidate boys; in one scene, she even knocks three of them flying. She finally made her official playable debut in that game's first DLC, where she leads a team of other girls from the series; mostly cheerleaders. Curiously, her hair in that game is dark blue instead of her usual purple. Because Hasebe also serves as the game's MC, and the cheerleaders also affiliate with other teams in a non-playable capacity, playing as them in will result in two instances of a girl appearing in some scenes.
- In-game, Hasebe's hair has become a darker shade of purple starting in River City Super Sports Challenge: All Stars Special, and so far continuing in every game since.
- The three-hit combo she used to attack three villains in a cutscene of River City Super Sports Challenge: All Stars Special has been made into an in-game move in River City Melee: Battle Royal Special.
- While the team she leads is called "Cheer Girls", Hasebe herself has not been depicted as a cheerleader. She does act as a cheerleader for the Historical Drama team (as Okoto).