Marina is the drummer of the Fresh Beat Band. When she is not performing with Twist, Kiki and Shout, Marina works as the chemist for a local cupcake bakery. She is very intelligent and inquisitive, especially when she needs to use her wits to stop villains.
Marina has fair skin, blonde hair and green eyes. She wears a blue dress with a pink collar and a pink belt. Marina also wears pink leggings and pink-and-white sneakers.
Marina appears in every episode of Fresh Beat Band of Spies. Her first appearance in an aired episode was in "The Wow Factor," though she also appears in the unaired pilot.