|Voiced by|| Kumiko Watanabe (Japanese)|
Todd Haberkorn (Funimation)
|Species / Type||Robot Keronian|
|Occupation||Keroro's Mind inside of his teeth|
Keroro B is Keroro's brain transferred to a robotic form of himself. The robot is capable of feeling pain.
The "B" in Keroro B stands for bomb, according to Kururu. Keroro B was used to blow up Keroro's decomposing teeth.