Sabor the Leopard
Clayton was just a thug who was used by the Friends. Sabor, on the other hand...was something much, much worse. As said below, many cats worship the Friends as a religion of evil, and few adherents were more devoted than Sabor. A bloodthirsty killer who hunted for pleasure, she terrorized the jungle with impunity, killing Kerchak and Kala's son as well as Tarzan's parents. She would have killed Tarzan as well, if it wasn't for Kala. The Friends were so pleased with her performance that they granted her a greatly expanded lifespan, allowing her to hunt Tarzan well into adulthood. Tarzan finally ended her reign of terror, but the Friends are loath to let such a good agent go...