|Family:|| Karsten (father)|
Nurse Joy (mother)
Paige (younger sister)
other Nurse Joys (aunts?)
|Voice actor:|| Kimberly Brooks (English)|
Marnie is daughter of Nurse Joy and an older sister of Paige. She is much more wiser and would take risk to protect her sister, as she cares about her.
- She is one of the few characters related to the other Nurse Joys to have their name revealed.