Robotnik's headquarters

� Robotnik's headquarters was his egg-shaped command center in the center Robotropolis.Formerly Castle Acorn, after the despotic mad scientist's coup the castle along with the rest of Mobotropolis was technoformed into it's current state. After Operation Endgame the House of Acorn took the castle back and stated to change it back to it's old carnation before Robotnik's coup. Unfortuanitly Mobotropolis was retaken by Dr.Eggman and was destroyed by nukes from Station Square