Unite! Fire J-Decker is the twenty nine episode of Brave Police J-Decker.
With Deckerd's memory back and team leader again, things appear to be back to normal. However, it soon becomes apparent that all is not well, as the damage Deckerd took has made him unable to combine with Duke to form the super combiner Fire J-Decker without one or both losing their memories. Duke continues to struggle to win approval from Regina, when the team is threatened by the surviving Chieftain who has been supercharged thanks to Victim O-Rand. Duke and Deckerd must make the choice to combine and risk losing their memories, or risk losing to the Chieftain.