She has orange hair and large eyes. She wears a pink dress with a white shirt collar, a white belt, white tights and black boots.
Pteresa is snooty, arrogant, and cruel, believing that popularity and appearances are the most important things in life. She is also very greedy, willing to pretend to date Sheldon for money, and treating him with scorn all the while. She hates when people mispronounce her name.
- Pteresa's name is often mispronounced as "Puh-teresa", which is a running gag in every episode she appears in.
- She bears a resemblance to the character Atomic Betty, from the 2004 Canadian animated-television series.