B8 supreme battle droid

The B8 Supreme Battle Droid was the deadliest machine in the galaxy. It was created by Baktoid Combat Automata(BCA) like the other B-type droids. It was a secret prototype that was revealed near the end of the Clone Wars. It was 8.5 meters tall. After the B8 made it's way into the battlefeild it killed 10,000 clones and 1 or 2 Jedi before being killed by the Jedi Masters. General Grievous wanted to mass produce the B8 but the BCA said it would be to much work. They said it would take 10 years to make 10 B8 untis. General Grievous said "Ok then make 10 units," but by the time the 3rd unit was made all the droids shut down and the BCA was no longer in existence.