Recon Site's Kingtoid is a sixth king boss that player can have a fight with.
His spaceship crashed into the planet Earth in area that is known now as Recon Site. His colony is spread wide in that kingdom. He is using mech droid for self defense. But they were not only invaders there.
After defeating the king boss, player receives a king's crown as a reward. Boss can be defeated multiple times each new timeline.