The Colorful Killers are a total of seven people with the same hair and eye colors as their names. Black, silver, purple, blue, green, red, gold,
They are the most powerful killer group ranked number one in Europe and Southeast Asia. Italian gangsters and Japanese trios are their regular customers.
Because they only complete tasks that ordinary people cannot complete, all seven of them are artificial robots.
Legend has it that the owner of the Colorful Killer is a child. All organizations in the world want to get hold of them, but so far no one can find any clues.
Therefore, they can be called the bosses of the gang, the gods of the killer world.