Cube Fortress

Adu Du's Underground Headquarters is located very, very deep under the Rintis Island Junk Shop, the underground cave headquarters is a replacement for the Spaceship since Probe sold it to Bago Go (Episode 24).

History
After Probe had sell Adu Du's Spaceship to Bago Go (Episode 24) and lose against BoBoiBoy in the Season Finale, Adu Du decided to dig very deep in the Junkshop so he could make his Headquarters and also their new home (Episode 27/Season 2 Episode 1 Pt.1).

Happenings
In Episode 30, inside the cave, Adu Du burned all Probe's Horror Book Collection because the stories doesn't make any sense.