Biography

Thea Stilton is the younger biological sister of Geronimo Stilton. Raised presumably by William Shortpaws and Aunt Sweetfur, the two were taken into the Stilton family and adopted the family name.

Thea was most likely top of her class in New Mouse City, because she was eventually invited to attend college in the prestigious Mouseford Academy, and she graduated with top honors in her batch. After graduating, she went on to work as a well-known journalist in the Rodent's Gazette and is currently the newspaper's special correspondent.

Sometime down the line, she was invited back to Mouseford Academy by headmaster Octavius de Mousus as an investigative journalism teacher, and there she meets five girls that she eventually takes in as her students and proteges. She writes about these girls' adventures around the world in a style similar to her brother Geronimo's books.

Occupation

Journalist

Nature photographer

Appearance

Thea is a tall, slender, busty and curvy, grey-furred mouse with lavender colored eyes, feminine eyelashes, and no visible hair on her head like Geronimo. Her outfit changes on occasion, but her main outfit consists of a feminine royal blue jacket with a white fur trim, a lavender or a pink scarf or sweater, and blue pants. She is known to be very athletic despite her slender yet busty and curvy build.

Thea is notoriously Geronimo's opposite to a great amount, almost sharing absolutely nothing in common with her brother. Geronimo is reserved, hates traveling, has almost all the common phobias to a near-crippling degree, prefers to think more critically before making a move, hates breaking his status quo, lives for the simple pleasures in everyday life, is polite to a fault, and is always too scared and too nice to stand up for himself; meanwhile Thea is fearless, assertive, unafraid of coming off as nosy if it means finding answers to things, charges headfirst into situations, prefers to strategize in real-time, has nearly no filter when something greatly displeases her, and has an insatiable thirst for adventure. This caters very well to her job as the special correspondent of the Rodent's Gazette, which involves a lot of travel and work off the desk. Her versatility on and off the field has made her a popular person among her peers (to the degree that she tends to get heavy preferential treatment from William Shortpaws), and Geronimo has mentioned having been compared to her frequently and being envious of her skills and personality.

In her book series involving the Thea Sisters, her softer and friendlier side shines through a lot more. Her wild side that Geronimo all too frequently brings up is almost nonexistent, preferring to fulfill a calmer and wise mentor figure role for the Thea Sisters.

Thea is described as being attractive appearance-wise and personality-wise, and as a result a lot of men have had an attraction to her. Not only do Hercule Poirat and Bruce Hyena both have crushes on Thea while Jim Dribbles has had a soft spot & crush on Thea in The Super Cup Face-Off but she also mentions in The Mona Mousa Code and The Lost Letters that she has had multiple boyfriends and countless admirers, respectively. (Geronimo has even said at one point that Thea has had "so many ex-boyfriends that [he'd] need six hands to count them all".) She has used her charisma to her advantage multiple times by sweet-talking her admirers into letting her get through places that would otherwise be inaccessible to her. However, this does have disadvantages, as Thea was tempted into becoming a queen or a princess more than once in the series. Because of her typical dislike for most traits considered feminine in behavior, Thea has always shot down these attempts and offers, and even rejected a typical wild west woman's outfit due to how it restricted her mobility (the only one who did something of this sort) in The Wild, Wild West.

In the television series, Aunt Thea is much more composed (if not slightly more aggressive and sarcastic) and more tomboyish than in the books, and typically speaks in a calmer tone of voice that’s implied in the books. In the books she’s into fashion which is that’s one reason on why she’s some bit of a girly girl and definitely an adventuress.

Relationships

Geronimo Stilton

Geronimo is Thea’s older biological brother, while they are polar opposites they love each other very much and Thea sometimes teases Geronimo, they get along very well and help each other when needed. In the show they are both skeptics when it comes to supernatural and magic. In the show Thea was shown helping her brother with his nerves a few times such as giving him tea to help calm him down.

Trap Stilton

Trap is Thea’s cousin while they both love each other, much like with Trap’s relationship with Geronimo their relationship is not always smooth and she dislikes Trap’s childishness and lazy obnoxious nature.

Benjamin Stilton

Benjamin is Thea’s nephew, she loves him very much and like her brother Geronimo she would do anything for him. Benjamin and her Aunt Thea have plenty of things in common as they both share a love for adventure, travel and sports. At somepoint in the show (not confirmed) Thea may of taught Benjamin how to drive the Metamouse given how well in the episode Pole Rats he was able to drive it as well as her. Also in the show they have teamed up and worked together many times when Geronimo isn’t around and are shown to make a great team. Much like her brother, Thea is very protective of Benjamin, holding him close when in some dangerous situations.

William Shortpaws

William is Thea’s adopted grandfather while they both love each other very much with William deeming Thea as his favorite. However, Thea has shown hints to dislike his stingy nature and constant yelling. It’s hinted that much like her brother she might even be afraid of him since as Geronimo says himself “everyone is afraid of him”.