Medarot 4: Kabuto Version is a role-playing game released for the Game Boy Color in 2001. Players once again take on the role of Ikki Tenryou, navigating the town of Omikuji. The plot centers on a new teacher, Ryuuko Yamikumo, who confiscates students' Medarot data. As players train their robots anew, they must confront the mysterious group known as the Four Kings, continuing the series' evolution in gameplay.
Medarot 4 was released in 2001 for the Game Boy Color. Like its predecessors, it was released in two versions: Kabuto Version and Kuwagata Version.
The game follows Ikki Tenryou and his friends in the town of Omikuji. A new teacher by the name of Ryuuko Yamikumo gets hired at Ikki's school and confiscates all of the class' Medarotches and deletes everyone's data, forcing them to start over in order to train them. Meanwhile, there are rumors of a group called the `Four Kings` wreaking havoc in Omikuji. Medarot 4 incorporates many of the gameplay changes made in Medarot 3.