So far, little is known about Marcy except that she learned of a mysterious chest located in some store that she, Anne and Sasha stole it from and was alongside them when Anne opens it which sends her, Sasha, and supposedly herself to Amphibia.
As of now, little to nothing is known about Marcy's personality.
She is described as an Asian teenage girl with a tall slim body, short black hair with a green barrette, wearing a grey hooded school uniform, green skirt, white socks, and brown shoes.
- Marcy's exact whereabouts have yet to be known.
- Her appearance in Amphibia season 1 lasted only around 20 seconds and was mentioned twice.