Sveta

Stella is a playable character of Golden Sun: Dark Dawn. Stella is a Jupiter Adept and is the first playable demi-human in the Golden Sun series. It is unknown whether she has any relation with the only known demi-humans in the GBA games, the werewolves of Garoh, but she is described as of a man-beast race who mutated after the rising of the Golden Sun. Her senses are enhanced, and she is able to detect special smells; more impressively, she also possesses the ability to read minds, and can perceive Psynergy in a special way.

In battle, Stella fights with her hands and feet. Her weapons are a series of gauntlets that can only be equipped by her, and are the only weapon she can use. She has the unique ability to transform into a beast form that boosts her statistics (specifically, Attack, Defense and her maximum HP; though, her maximum PP is lowered) and changes the options available to her in battle. For instance, she becomes able to physically attack more than one target and defend for more than one Adept, but her Psynergy set changes and she becomes unable to unleash Djinn. Furthermore, for each turn that she remains transformed, one of her Djinni is set to Recovery when she reverts.

She also has a brother who acts as a reluctant antagonist

As a playable character
Stella is unique in battle. She is capable of transforming into a powerful Beast-form that has the following effects:
 * Increased Statistics
 * New Psynergy
 * Ability to attack more than one enemy at once
 * One Djinn is set to Recovery for each turn she spends in this form.
 * She cannot unleash Djinn in this form.

Trivia

 * Stella is the first playable Adept that does not equip and use conventional weapons, and is the first physically-attacking Jupiter Adept, along with the first physically-based female character.
 * Stella is similar to Laguz units in Fire Emblem: Path of Radiance and Fire Emblem: Radiant Dawn, in that she is typically in a humanlike form with some features of the animal she represents, but fights with natural physical strength by transforming into a full-bodied form of that animal.