WarSim

Autonomous Biomechanical Warrior Simulations, known as WarSims, are a class of pre-tech artificial life form designed for combat. They have living computers wired into their biomechanical bodies. They are powerful cybernetic creatures optimized in form and function for maximum violence. They are taller than a standard human, and grow fast; all WarSims reach their adult growth by 5 years old. They feel neither pain nor fear. They are not sapient but can be trained for either security or war.