Margo Pike is Mallory Pike's 6 year old sister. She has 7 brothers and sisters. Margo barfs easily.
It was revealed in Super Special #1 Baby-sitters on Board! that Margo also gets sick on airplanes.
Margo entered the Little Miss Stoneybrook pageant, where her talent was to peel a banana with her feet and then recite "The House That Jack Built."
Margo is going through a bossy stage and bosses her family around.
Margo and her sister Claire share a bedroom.