Raston Warrior Robot
From Multiversal Omnipedia
The Raston Warrior Robot was an extremely deadly humanoid robot which menaced the Third Doctor and Sarah Jane Smith in the Death Zone. Capable of moving at blinding speed and reacting to any sound or movement, it could fire slicing discs or javelins at its targets. The Raston robot was distracted by slaughtering a party of Cybermen, enabling the Doctor and Sarah Jane to escape.