Eye of the Beholder - S1.E30

Mr. Huxley and his class (including Presley) are touring the Fisherman's Wharf. Chontra terrifies them with spirits and leaves a cat statue that the Mummies take back to their Sphinx. Chontra uses the statue as a gateway to get to the Sphinx. Her goal is revenge on Rath, so she distracts the other Mummies by changing into people in their thoughts. Ja-Kal thinks back to his wife Tia and their baby son, and Chontra becomes Tia. For Armon, she changes into his mother and brings him food. She then becomes Nefer-Tina's friend Kenna, who never knew she was a girl. With those three out of the way, she changes into Ja-Kal to fool Presley and ready herself for the final battle with Rath. But what is Chontra really? At the end of the show she taunts Rath with: ""You can't face what I really am"", and she then becomes Medusa.