Brave Police J-Decker returns to a much lighter tone, focusing more on "Might Gaine"'s concept of "robot as human-built AI construct." Grade schooler Yuuta Tomonaga 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. It has been claimed that one of the major Da Garn villains, Redlone, makes an appearance in "J-Decker"; this is not true. Because of Redlone's immense popularity (compared to other Da Garn villains), it became somewhat traditional to have the first villain of a given Brave series resemble him (there is a similar character in Might Gaine). The character that appears in J-Decker is not named Redlone, nor is he supposed to be Redlone. Some confuse the two characters and then claim that Da Garn and J-Decker are connected somehow, which is untrue.