Losing their homeworld and floating space, attacking unexpected spacecrafts and invading other worlds.
But, the Heroes has defeated and tossing to the sun. Few remain alive and the mysterious mastermind sees them as assits for his plans.
Brain Factory is built and began on mass production of Brain Army Swarm, sending to Hero Factory's homeworld with primitive lifeforms as the perfect host as 'Fighting Machines."
Once defeated again and thanks for brain controlled Dragon Bolt, they remain hidden until the next invasion begins again.
- They are based Puppet Masters, both needing host to controlled and invading worlds.