Even before the climatic reveal, Mr Toggle's workplace and inventions hint at just the kind of person he is. Dr. Shreek(who is a robot built by Toggle) claims he's a brilliant and famous "robotician", even though there's no mention of his fame anywhere else. His inventions are advanced and innovative, such as the robotic floor cleaner and the head-set that lets one play instruments mentally. But why is someone as brilliant as him in a dingy old school working as a groundskeeper? Because it lets him live out his fantasies. Toggle is a very childish and self-centred man who's built himself a world where he can make machines that do what he wants, an assistant who worships him as the greatest inventor ever, and beautiful music that he makes for himself from all those silly naive kids who will lend him their hands. The company of other people is so below him he doesn't even ''care'' about sharing his technology with them, and just wants to seclude himself where he can work on his brilliant projects in peace, away from the reality that he's a self-deluded serial killer.
Toggle is definitely done for, but his robot minion Dr. Shreek was last seen deactivated-as in dormant, not destroyed, and it's never said the police discovered Toggle's lair. Now, keep in mind Shreek was apparently advanced enough to act on his own and was in full kill for hands mode before he shut down. Given the piano school is an urban legend and is now mysteriously vacant, what's going to happen if some curious local kids go snooping and find the android? Or worse, find the remote to turn him back on?
