Wendy "Kootie Pie" O. Koopa

Gwendoline "Wendy" Kootie Pie O. Koopa, one of the youngest kids and the only daughter of Bowser, is a nine year old Koopa. Her personality can be ranged to be bratty to tomboyish.

Super Mario Legacies
In SMLG, Wendy is 9. She is the only girl out of the Koopalings, and because of that has developed a tomboyish personality. However, she is still fond of things like fashion and jewellery, as well as desiring wealth and prestige. Wendy is also shown to be quite spoiled and is extremely easy to anger, and can become violent when provoked.

Hyena Hideout Kingdom
Kootie Pie, got her name from when she hatched and looking really cute. Yet, as she grew up, the Mario Brothers would call her adorably ugly. Kootie Pie's personality is spoiled just like Junior but a lot more bratty. She loves hanging out with her cousin Pom Pom, whilst Junior hangs out with Boom Boom.