K1-B0 had always been longing for a purpose to change the world he lived in, which caused his professor to find a new task. K1-B0 took on a huge modification that replaced his legs with a tail adapted to swim, with his new body, he explored the ocean all day searching for naval mines to disarm. Later on when the existence of the supernatural such as Sirens were discovered, he was given the order of killing or capturing them on sight. K1-B0 never met another siren but plans on lying to his creators about the sighting if he ever did.

One day while he was swimming across the ocean, he noticed that there was a bull shark chasing what looked to be a human at first glance, but then noticed the purple scales that adorn it.

“Get out while you still can!” K1-B0 shouted even though he doubted that he would be understood by the creature, he went behind the shark and grabbed onto the dorsal fin of the shark to try and distract it.