DarkShine is a Bakugan, and the guardian Bakugan of the protagonist of the 0000 Ark, Cyan.
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Originaly DarkShine was a Darkus Robotalion. As Robotalion, he got destroyed by a Dark Force, and got re-created as this Cyber Bakugan. As a Cyber Bakugan, he applied himself the mission to protect New Vestroia from Dark Forces with his life. During one of his battles against a Dark Force, he got roughly teleported to Earth, where he was found by a young boy named Cyan. From the shock that DarkShine felt during the teleportation he could not open or say something during the same day. On the next day, he woke-up Cyan, and explained him everything. They became friends, and Darkshine became Cyan's Guardian Bakugan.