Robomaru "Robomars, Customaru, RoboZero"
About
Robomaru is Yuusuke's partner and one of the main characters in the Robot Poncots manga series. He is the first SR Corporation employee to appear and although he is a bit shy, Robomaru has a pure and straightforward personality.
Robomaru is an arm-type Robopon, and from Robot Poncots 2 onwards, he acquires the ability to evolve into "Robomars" (ロボマルス) and "Customaru" (カスタまる) through the power of the "Metamor Arm", but the duration of Robomarus's transformation is only three minutes, and the "super transformation" into Customaru can only be performed once after that time.
Robomaru was a furious and menacing Robopon developed by Dr. Zero 20 years ago, know as RoboZero (ロボゼロ). RoboZero lacked the "heart" that a Robopon needs, and was equipped with many forbidden weapons, including the "Fire Bazooka", which can completely melts his opponent's Robopon without leaving a trace.
Although he had no heart, after being tricked and attacked by a relative, RoboZero begins to worry about his own existence, causing him enormous confusion. Robozero fought against Musashi and Noroider, who were in the king's royal guard. He was destroyed by Noroider, but was later picked up by Spollo, who repaired and embedded a Robopon heart into him, transforming him into Robomaru.
In the game, Robomaru is the first Robopon you receive in the "Sun version". Robomaru's design in the main game is a red Robopon with a drum-like body, but in the manga version, his design is more detailed and has a rabbit-like appearance.