If you can't overpower a bully, maybe you can co-opt him by appealing to his better self and fitting in with the group, and in Deborah Diesen's The Pout-Pout Fish and the Bully-Bully Shark (A Pout-Pout Fish Adventure) (Farrar, Strous and Giroux, 2017) shows her hero Pout-Pout Fish converting the shark to one of the gang, one who even follows the rules: 1) BE KIND!