Ellen is a second-year plains zebra student at Cherryton Academy. She has a distinctive appearance marked by white hair and black body stripes, featuring a completely black, unstriped mane. Her eyes are gray. Ellen wears the standard Cherryton Academy uniform: a white blouse with a bow tie, a long pleated white skirt bearing two light blue horizontal lines near the hem, a thin tan belt, white anklet socks, and black Mary Jane shoes.

As a member of the drama club's acting team, Ellen joined due to a special condition or undisclosed secret. Following the murder of Tem the alpaca, she becomes visibly fearful of carnivores and is among the first herbivores to openly blame them. Her fear fuels growing tension and division between herbivores and carnivores within the club, leading her to participate in heated discussions where herbivores express distrust.

During Meteor Festival preparations, club leader Louis restricts off-campus access to carnivores only, citing safety concerns over the gazelle killings; Ellen reacts with visible displeasure alongside other herbivores. Louis's subsequent warning about the dangers of the Black Market alarms her. She expresses disbelief and heightened anxiety upon learning about this place selling herbivore meat and blood. Bill later attempts to ease her fears by falsely claiming the Black Market primarily deals in carnivore pornography.

Despite her apprehensions, Ellen demonstrates care for her friends and participates in school activities. She dances at the Meteor Festival despite being part of the acting team. Her role in the school play involves acting as a deuteragonist alongside Louis and later Bill. Beyond these events involving the initial drama club tensions and the Meteor Festival, her background, family, activities outside depicted school arcs, potential character development regarding her fear of carnivores, or involvement in later storylines remain undocumented.