Re: New year
The Janitor has been the same guy for twenty years. He not only knows were the bodies are buried, he knows everything because he has to deal with the literal trash.
A fired techie might wipe the database in anger, a fired Janitor will make sure your life is Hell.
He might not know much of computers but he has copies of all the keys in the building.
He is the guy who they call to clean every mess, so he got blackmail by the truckloads. He might not know your browser search story but he is the one who saw the stains you left after work.
Worse, most people do not even know the guy name, he is just the janitor for them.
He is at work before they open and leaves hours after closing.