Surveys show that most employees will encounter at least one toxic boss in their careers, and academia is no different. Below, we describe an assortment of 16 prototypical toxic bosses and conclude with some strategies for working effectively with them if you have the misfortune of being stuck with their oversight. If you would like to keep track of all the toxic bosses, we provide below a Toxic Boss Bingo card that summarizes all 16 types. They don’t know what they don’t know, but they also don’t hesitate to act on limited information with unjustified confidence. They don’t know what they don’t know, but they also don’t hesitate to act on limited information with unjustified confidence.