Marshmallow

Marshmallow is a member of The Frozen Watermelons team. She was a member of the Bright Lights team. She likes to hang out with Bow and Apple most of the time.

Personality
She is sweet, cute and nice. She likes to help one of her friends.

In a Locked Room series
She helped Richard to get past the rooms of Portal. She also helps to get past the rooms of Portal 2.