Jenna Morgan is a 3rd grader in Mr. Ratburn's class. Although mostly used as a background character, she soon received several speaking roles, and eventually became a main character (similar to George). However, unlike him, she has had little or no major roles in later seasons.
Jenna is a light grey anthropomorphic cat. She wears a pink dress with white long socks and brown Mary Jane shoes. In the summer Jenna wears a light blue t-shirt, pink overalls over her t-shirt, and light blue sandals. She is seen wearing a white-and-pink swimsuit in one episode. She also wears a pink nightgown and pink slippers.
Jenna lives with her father and mother who have been seen briefly throughout the series.
Binky Barnes - Probably the weirdest and most unique friendship in the entire Arthur show. In the episode "Muffy's New Best Friend", it showed Jenna and Binky playing soccer together. The episode also showed Jenna and Binky having the same taste in movies.
Francine Frensky - Even though it seemed that Francine made Jenna feel guilty about the 'Athlete of the Year' award, in the end, Francine made up with Jenna. After that, Francine and Jenna became good friends. Francine was even able to pull some strings to get Muffy to invite Jenna to her sleepover. Francine is also the only friend who knows Jenna's real secret.
Jenna suffers from nocturnal enuresis, commonly known as bed-wetting, and often wears a diaper to bed, referred to as a "Pull-Up" (a take-off from Huggies Pull-Ups, but more based upon GoodNites to fit for her age).
Jenna is midfielder for the Lakewood Elementary Soccer Team.
In later seasons, Jenna has practically disappeared. While she is still frequently seen in the background, her talking roles have decreased significantly. In fact, since "Binky Goes Nuts", she has not spoken at all. This might mean that Jenna won't have any speaking roles in future seasons.