Malia Tate's first appearance in Teen Wolf was in season 3.

She is the biological daughter of Peter Hale and Corinne, The Desert Wolf.

Knowing that Corrine would kill her, Talia Hale had her put up for adoption right after birth. She was officially adopted less than a month later by Evelyn and Henry Tate and never knew of her true lineage.

 

She was thought dead for eight years until Scott McCall and Stiles Stilinski stumbled upon her den. Scott forced her to return to human form and was unable to change back. She was committed to "Eichen House", a mental institution for a brief time after reuniting with her adoptive father.

Malia has a very important role in Teen wolf too starting from season 3. She is known to be such a vicious and ruthless character with bizarre habits...

Her status in Teen Wolf is a "Werecayote".

 

She is portrayed by 'Shelley Hennig'!