She is light purple with white hair that contains yellow hair curlers, nails, and black eyes. She wears glasses, an orange shirt, a light green wool coat, and green high heels.
She is a sweet old lady. She can fight back when it is necessary. When fighting, she uses something called "Granny Powers."
It is unknown whether or not Beatrice was born in Bikini Bottom or moved there, but she does have an image of her outside of Bikini Bottom.
When Beatrice was in school, her peers made fun of her, as shown in a flashback.
In "Mall Girl Pearl," she looks fondly on Jonesy, suggesting that they had a friendly and possibly romantic relationship when they were younger.
She graduated from high school and went to a few locations in her youth. Two of which are Bikini Atoll and Atlantis.
In "Mall Girl Pearl," she owns a store in the Bikini Bottom Mall. After Pearl gets a job there, she comforts her after being teased by Nocturna, Marina, and Nixie. She then knits a scarf and ties the trio together, and tells them when she saw her first picture show.