Height: 168 cm
She is the daughter of a hunter from Sawin Village in the territory of Gloucester. Aiming to become a high-earning mercenary, she took on significant debt to enroll in the Officers Academy at Garreg Mach Monastery, where she joined the Golden Deer House. She has a friendly, energetic personality and speaks in a somewhat rough tone.
Her spirited nature can sometimes lead her to speak harshly to others—such as Marianne—though she later reflects on her behavior and amends her attitude.
As mentioned, the Officers Academy has high tuition fees; while some students do enroll as commoners, many actually come from unique backgrounds—such as fallen nobility, royalty from vassal states, wealthy merchant families, or those with connections to the aristocracy. Leoni, lacking any such background, is in a sense a genuine commoner of Fódlan. Given these circumstances, she is frugal and takes the initiative to salvage and reuse discarded items. She dislikes extravagance, yet if treated to her favorite meal, she happily accepts it, noting that it is a "rare treat."
As a child, she persistently pestered Jeralt—who had visited the village to investigate poachers—into teaching her about the mercenary trade during his stay. She calls Jeralt "Master" and trains daily to become an independent mercenary. She even claims to be his top pupil and is so fiercely competitive that she has told the protagonist—her own teacher—that she refuses to lose to them.
