The C.R.A.T.E.R Project (Combative Robotic Answer To Earth Rivalry) is a project created by Earth Command to solve human conflicts and rivalries and is also the project responsible for creating the Lunar League, a sports circuit involving robots competing against other teams.
The C.R.A.T.E.R Project's personnel created robots to fight human battles and solve conflicts. Surprisingly, Dr. Blood came up with the idea of robotic combat in his early years as a colleague to Dr. Tommy, but he wanted the robots to fight with dangerous weapons, similar to today's military arsenal. Dr. Tommy however, suggested the robots use water weapons to fight with. Afterwards, the Lunar League was created.