When Ramona was a baby she couldn't say "Beatrice" and instead said "Beezus", from that day forward that was her nickname.
Beezus is very responsible and sensible, as shown by the fact that she always looks after her sister Ramona and that as she got older, she started babysitting.
She likes to sew and used to take art lessons, but would struggle creatively and also struggles when she has to do creative writing.
She's mature for her age and adults often compliment her about this. She's been called "her mother's girl" which makes Ramona jealous.
She does occasionally do something irrational, such as her arguments with Ramona and when she didn't ask permission before getting her ears pierced, but her sensible side always wins out.
She is very close with her family. Her mother always says about how responsible and sensible she is. She likes to goof around with her father. She fights with her sister, Ramona, but as they grew older, they became closer. She has a special relationship with her Aunt Bea and was named after her.
When she was younger, she was friends with Henry Huggins, and he came over a lot with his dog, Ribsy. In the movie, Beezus had a romantic relationship with Henry. In "Ramona's World", she became best friends with Abby, and another close friend of hers is Mary Jane. She also used to be friends with a girl named Pamela, but they fell out when Pamela became snobby about Mr. Quimby's job.
- She is learning how to speak French ever since attending high school.
- She formerly had short hair but now has hair below the shoulders.
- She has her ears pierced.
- She was the third person to see her sister, Roberta, the first (obviously) being Mrs. Quimby and the second being Mr. Quimby.