|Family||Mr. McInnerny (father)|
Mrs. McInnerny (mother)
Beulah's grandfather (grandfather)
|Cartoon debut||"Arthur's Eyes"|
Beulah is a tanned cat that wears a red jacket with a single gold stripe on the sleeves and near the bottom of the jacket, a white shirt underneath her jacket, beige khakis, and red and white shoes.
She wears rectangular lensed glasses with the frame of the glasses being gold colored and she has long red hair. She also wears a beige maillot, which was first shown in the episode "D.W.'s Backpack Mishap".
- She also bears a striking resemblance to Aloysius Zimmerplotz, but is not the same person, although he could be related to her.
- She plays the clarinet in the Lakewood Elementary Band.
- She reads Henry Skreever.
- She was a tryout for Arthur's band.
- She has been to a You Stink concert.
- She competed in the Mathathon.
- She is known to surprisingly win contests. She won the "Little Miss Crocus" beauty pageant in the episode "Little Miss Meanie". She also won the short story writing contest in "Fern's Flights of Fancy".
- In "Arthur's First Day", Beulah has skipped a grade and is now a 5th grader in Mr. Marco's class.