An emotionally disturbed 17-18 year old young woman, who looks two years younger than her actual age. She is reality challenged and shunned by the people in her life, with her domineering younger brother, who is two years younger than her and treats her like a child, claiming that Mantha acts like nothing is ever her fault and while he and other people strongly believe she is an attention-seeker, she believes her family members are ganging up on her. Mantha detached from her real friends because she decided she no longer liked them and were terrible people who were very immature, then she makes friends with the Chipmunks and the Chipettes and other strange creatures. Alvin seems to encourage Manta to do bad things and make trouble. Mantha is said to suffer from Histrionic or Borderline Per