A triple-changer from the Brave Police, he served as the prototype unit for BP-501 Shadow-Maru and can be considered as his brother.

Grade schooler Yuuta Tominaga stumbles upon Deckerd, a humanoid robot under construction by the Japanese police, built to fight advanced forms of crime. Yuuta's constant contact with Deckerd gives the robot a "heart", or personality; when Yuuta is recruited as the "boss" of the "Brave Police" as a result, a true human/robot partnership occurs. <br><br>
(Source: Wikipedia)

Kagerou