The Ninja Supremacy

"The Ninja Supremacy" is the thirty-sixth episode of the first season of Randy Cunningham: 9th Grade Ninja and the second part of a double-length special episode following "The Ninja Identity". It premiered on October 12, 2013.

Synopsis
When Randy inadvertently mind-wipes himself and develops amnesia, Howard must fill in as the Ninja until Randy can get his memory back.