Cube Fortress



"The Cube Fortress is underneath a junk shop in Rintis Island, but this one is served as Probe and Adu Du's headquarters after they sold the Spaceship A80 to Bago Go in the name of money that they could save. If we storm this fortress, then we'll convince them to join us too."

--Su Ji-Hoon, Markas Kotak

Cube Fortress (Markas Kotak) is located under the Junk Shop, it serves as his headquarters for the Spaceship after Probe sold it to Bago Go.

In When the Cold Breeze Blows Away, it would be happened in during World War III when it still would be located under the Junk Shop