Lisa Heffenbacher is a sweet, well-liked girl and a member of the Electric Company.
Lisa is loved by everyone in the neighborhood, even though she is rather clumsy. She is the voice of reason in The Electric Company, and is considered more of the "girly" girl between her and Jessica. Lisa is sometimes portrayed as completely perfect by her neighbors. For example, in Scrambled Brains, the neighbors sing that she can do no wrong in the song. She is also very smart, and enjoys science. In season 3, she is invited to go to a science camp, doing multiple science experiments across the country. This results in her not being active in the Electric Company anymore, but it doesn't stop her from actually being a member. She still keeps contact with Hector, Jessica, Keith, and Shock (and possibly Marcus) and she always gets updates from Hector.
Lisa has the basic wordball power. She also has the power to unscramble any anagrams that she finds at astonishing speed, and can even change letters with enough concentration. She's basically the polar opposite of Annie Scambler.
Relationships With Other Electric Company Members
Hector and Lisa are shown to be very close friends. They help each other out a lot. When Lisa was ready to give up in the episode Gravity Groove, Hector cheered her up by singing the song "Step Up."
Jessica Ruiz 
Lisa and Jessica are shown to be good friends. They are very friendly with each other and have been seen shopping, hanging out, and having sleepovers.
Keith Watson. 
The two are shown to be good friends. They tease each other on occasion and are sometimes shown hanging out.
Given that the only time they've interacted is when Marcus became a part of The Electric Company, little is known about Lisa and Marcus's relationship.
Shock and Lisa are good friends. In Gravity Groove, they even entered a dance competition together.
Relationships With Pranksters
Francine is always causing trouble for Lisa, especially because she is jealous of her.
Annie is always jealous of her, and she and Lisa have opposite powers, making them rivals. They can be shown to be friends sometimes.
Lisa seems to have control over Manny and his brother. In Flube Whisperer, Manny admits that he secretly admires Lisa.
Lisa tries as best as she can to not bother Danny, and she succeeds for the most part. He never seems to be upset with her personally, but rather the entire Electric Company. They are in the same grade, and might have been friends in kindergarten. Lisa once forgot to say "Your Welcome" after Danny thanked her and didn't speak to her for a year.
It is unknown how Lisa feels towards Gilda or if thy have ever met.
- She is the only white member of The Electric Company.
- She was not a main character in Season 3 because she's at university.
- In the episode, "Friends or Aunts", a lot of Lisa's favorite things are revealed.
- Lisa's favorite animal is dogs.