Key Tools are small devices that Guardians wear on their left arms. These tools are alive and intelligent, with the ability to turn themselves into many other objects for a given task. Key Tools are also one of the few things that can create a portal, and are the most efficient method. Bob's key tool is named Glitch, and Turbo's is named Copland. This bond allows the Guardian to issue commands from outside hearing range, as Glitch once responded to a return command from Bob halfway across Mainframe. (Painted Windows) Key tools run on stored power and must recharge their battery every so often.