after the destruction of the original fredebot the mark II was built to have one simple mission: to kill frederwick and then shutdown. V.G having fixed all the flaws in the original fredebot design made it impossible to program another mission into him and thus the fredebot mark II was sent into action. also having actual conventional weapons built into his body having a machine gun and a rocket launcher and thicker armour more violent and unpredictable personality rather then a complete copy of frederwicks personality and the added bonus of having all the memories of the mark I actually making it a tad personal.