The Chamber of Birth (誕生の商工会議所 Tanjō no shōkō kaigi-sho?) is a secret lab in the Gods Temple. This is where most humans and other species are born at in the Super Baxter Franchise. This is where Baxter and the rest of the characters was born at.
It is unknown who the real creator is behind this to give life to species to earth, but as soon in the future. It shall be revealed.