- As of "Milli Saves The Day", Milli is the only member to go on a mission alone. That is the only episode containing solo adventure and she is the only member who has done that to accomplish the objective.
- "Milli" more literally means "By the thousandth" or just "thousand". It may also be based upon the word "chameleon" since she can change colors/colors from her dress kind of like a real chameleon.
- Milli and Geo are the only main characters with definite age (Milli is six years old and Geo is five years old). The other character Bot's age is indefinite. It predicts that the age gap of Geo and Milli is one year.
- For some reason in some Team Umizoomi products, Milli's clothing has a more reddish tone.
- Sometimes Milli's dress would deploy like a parachute.
- In one episode, it is revealed that without her helmet, she has very long red hair.
- Out of all the members of Team Umizoomi, so far, Milli is the only member to not be in trouble. Bot was in Crazy Skates while UmiCar was in The Great UmiCar Rescue.
- According to polls, Milli is the favorite member of Team Umizoomi.
- Milli is an abbreviation of Millicent. or per mille (‰ ).
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