[s1e15] Malefactor Online

The Plumbers are shown housing an injured creature known as a Psycholeopterran, which has the ability to hypnotize its prey—a power that Ben accidentally experiences.

The episode features a significant flashback where a younger Ben, Gwen, and Grandpa Max visit Mount Rushmore , which is revealed to be a fully functioning Plumber base . [S1E15] Malefactor

The episode includes action sequences featuring some of Ben's signature transformations, such as Humungousaur and Spidermonkey . The Plumbers are shown housing an injured creature