Years of abuse has left Marisa bitter and a sour tongue.After she runs away and befriends Abraham Rivera, the tragedy of her situation is revealed, explaining the reasonings behind her previously macabre antics.Despite her age, Marisa is also crafty and intelligent.She is also sensitive and vulnerable beneath her rough exterior.Before she moved out, Marisa was a loner, and her so called wealthy family take her away from her real family as a baby after The Pattersons were going insane with jealousy.
Marisa is a 18-year old girl whose overall appearance is often described as adorable, even by Abraham himself. Being a child, she is short in stature and has long black hair underneath her black hat.She has pale skin and green eyes that are rather large with an Anime influence and also carries a slender body.Marisa's signature "goth" outfit is a black hoodie with a grey skirt, black and purple leggings, and black boots.She wears a spiked collar and bracelets when she became goth.Underneath her hoodie is a white shirt with a red collar.
- Marisa is the only main character that never called Abraham by his nickname 'Abe'.
- Marisa's dress resembles the dresses worn by aztec women.
- In a reference to tv series, Marisa appears to be an allusion to Meg Griffin from Family Guy.