Marie Curious (formerly Pierre) is the oldest child of Georges and Adrienne Pierre, and the wife of Vidcund Curious. She is also the stepmother of Albert Curious, who is her husband's Alien child with Pollination Technician. She has two younger siblings named Virgine and Gilbert.
- Marie's name is a reference to the famous Polish-French scientist, Marie Curie. Her maiden name - Pierre - was the first name of Marie Curie's husband.