Milli is a very young girl in the age of 5. Her special feature is red ponytail hair and also pink apparels.
Even if Milli is still very young, she has special superpowers than can be used to face enemies or solving problem.
The types of power that she has are measure, pattern, karate, and the last is ponytail power. Other than her powers, Milli is also known to be the sister of Geo, another main character in the story.