Evil Otto

You've been stuck in an endless maze-like rooms on Planet-Mazeon, then you see tons of red robots known as "Automazeons", they can shoot lasers at you. You decided to escape Planet-Mazeon by finding an exit from any room as you destroy all robots with your ray gun. Room-by-room, you encountered a bouncy smiley figure which is indestructible and cannot be destroyed / defeated known as "Evil Otto", the commander of the robots from Planet-Mazeon.