The famous squid sister Marie of the squid-sisters! Marie is seemingly quieter and not as excitable as her cousin, and usually only gives a half-smile, if at all. She can be a very sarcastic from time to time, and slightly prone to complaining, but is usually in a mild mood. Overall, her disposition is laid-back and friendly/grumpy. She is also an expert at doing impressions, as mentioned by Agent 1. She dislikes overly-thrilling activities, and can even be somewhat lazy. Marie hosts Inkopolis News with her cousin, Callie. She usually interjects humorous statements regarding stage news, often poking fun at Marie in the process. Marie often groans at Callie's puns, but is known to make silly comments herself.

She along with her Cousin Callie play as support roles for Madeline / agent 3. They give her new assignments and inform her of any suspicious or criminal activities going on in Inkopolis.