Gangu is the invention of Dr. Ein, best friend of Bongo and tutor for White Bomber. Gangu is chatty, self-centered, annoying and is also one of the members of the Jetters. Bongo upgrades Gangu numerous times into random objects to help with their missions and daily life; Gangu dislikes this and even wished that Bongo wouldn't upgrade him. Gangu is portrayed as a humorous character throughout the series. He would occasionally break the fourth wall.   [Source: Bomberman Wiki]

Deep Space, many different cultures have come together to live on planet Jet. To keep the peace an organization known as the Jetters is formed. This space police group fight against the villains known as the "Hige hige dan" making sure that the universe is safe. The leader of the Jetters Mighty is a powerful Bomberman, who is looked up to and respected....his brother however is a lazy crude slacker named Shirobon. Suddenly Mighty disappears and Shiro finds himself placed in a new situation. Shiro steps up and become a responsible Bomberman, and with the new friends he made of the Jetters it may become possible for him to be the next "Jetters leader."
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(Source: Anime News Network)