An ethicator is an add-on to the Duplicator. It allows the user to control the moral characteristics of the duplicate(s). Calvin only used this add-o once, to make a duplicate of his good side to do his dirty work, including going to school. Calvin's mom was puzzled by the duplicate's uncommonly polite behavior. Calvin and Hobbes hid in their room so as not to expose te duplicate. Despite its apparent usefulness, the Ethicator was a failure, evidenced when the duplicate began writing love letters to Susie. Later, Calvin confronted the duplicate, and they began to fight. However, due to a function, the duplicate vaporized just as he was about to throttle Calvin. The reason for this was that Calvin had unintentionally installed a Moral compromise spectral release phantasmatron in his ethicator, meaning that if a good duplicate had an evil thought, the duplicate would vanish. A strip explaining the Ethicator.