Bobbi Sparks is the younger sister of Billy Sparks and the daughter of Herschel and Brenda Sparks and a neighbor of Sheldon and his family. She is a 7 year-old girl who has been constantly bullying Sheldon in Jiu-Jitsu, Bubble Wrap, and Yoo-hoo.
Bobbi is first seen in "Jiu-Jitsu, Bubble Wrap, and Yoo-hoo" where she is shown to be bullying Sheldon. It is revealed that she slaps him around; takes his lunch money and she even put a tadpole down his shirt.
Later, she enters the Cooper garage and injures Sheldon's knee. After that, Sheldon hires Missy to go deal with her, but Missy instead ends up playing and having fun with her and Billy.
- Bobbi hasn't reappeared since Jiu-Jitsu, Bubble Wrap, and Yoo-hoo.
- Bobbi made friends with Missy.
- Bobbi would have been 37 years old in 2021.