A-21 built to crush Doctor Keith's enemies and any one else that gets in his way oto rulling the world. A-21 is a kiling machine, heavily armed and his army can not be penatrated. He doesn't move very fast, but his attacks are fast then him. A-21 can easily over power a whole army, because of the weaponery that was made exspecially for it to destory all that get in the way of its master. Also anti-fur robot, will kill fur on sight, without command from master.