The Build Team are a division of the Brave Police.
The Build Team were construction robots that help build the facilities for the police, they were given Super AI programming like Deckerd allowing them to have emotion.
The Build Team provide support for J-Decker by combining Build Tiger, the first time they did this they were unsuccessful. When the space elevator was getting damaged and J-Decker could not stop it, they managed to succeed with the help of their close friends; Ayako Kimizuka, Seia Onoue, Yuta's best friends and his neighbours.
Later, another member was added, the soccer enthusiast Drillboy, he was young compared to the rest.
Build Tiger is the combined form of McCrane, Dumpson and Power Joe. McCrane becomes the Torso and right arm. Power Joe becomes the right arm and thighs and Dumpson forms the lower legs.
Super Build Tiger
After Drill Boy was introduced, all of the Build Team could combine into Super Build Tiger, a very powerful mode where Drill Boy splits to form armor for Build Tiger.