Carolina

 Carolina is a main character and Helen's cousin is the TV show Martha Speaks. Carolina is Helen's cousin, the daughter of Mariella's brother Jorge. She's a year older than Helen. Unlike Helen, she's very confident and more socially adept. She likes to point out how much older and more "together" she is than Helen.

Personality
Carolina is self-centered, sometimes bossy, she thinks that she can sing very well (which most other characters think is untrue) and she sometimes has stage fright when acting. She also likes a few sports (mostly hockey and football). She can also speak Spanish.

Appearance
She considers herself to be smart when it comes to fashion, but she usually wears the same thing, a pink T-Shirt, pink earrings and a blue skirt with flowers. In "Dog Daze", Carolina dreamt that she was turned into a dog. She has medium-dark skin and dark brown, curly hair.

Trivia

 * When Helen drew her family tree in Martha's Pack, she didn't draw Carolina.
 * Her last name is unknown. It is also unknown who her mother is.