Jenny Matel arrives at East Oizumi Academy as an Italian exchange student whose blonde hair, large-chested figure, and demeanor present a distinctly American stereotype. She sports blue eyes, blonde hair featuring cheek curls and an ahoge, and consistently wears the school uniform accessorized with a bow. An active member of the school's cosplay club, Jenny exhibits a bold, extroverted personality that contrasts sharply with quieter members like Chako Hasegawa.

Her defining trait is a persistent "Lolita Complex," manifesting as an intense sexual fixation on Athena Imai, the club's 11-year-old member. This obsession drives repeated attempts to approach Athena, frequently leading to comedic confrontations thwarted by Athena's protective older sister, Maria Imai. Jenny's pursuit fuels numerous subplots, including a training camp incident where she sneaks into Athena's bed but mistakenly ends up with Sachiko Arii.

Jenny favors elaborate cosplay, particularly costumes with animal or furry elements. Key outfits include Kiki from *Kiki's Delivery Service* for a magical girl theme and a martial arts outfit resembling Yuri Sakazaki from *King of Fighters*. Another costume features a giant eggplant suit marked with "茄" (nasu), creating a visual pun on the Japanese word for eggplant sounding like "nurse."

A pivotal shift occurs during a nighttime attempt to reach Athena, where Jenny mistakenly enters Sachiko Arii's bed. Sachiko, identifying as a lonely widow and misinterpreting the situation, initiates non-consensual sexual activity. The next morning, Jenny reveals a newfound appreciation for older women, significantly redirecting her focus away from Athena.

Her documented appearances remain within the original OVAs, participating in club activities like cosplay competitions and hot springs visits, where her interactions with Maria and Athena consistently generate comedic situations.