April O'Neil (TMNT 2012)

Description

This character is from Nickelodeon's Teenage Mutant Ninja Turtles from 2012. She is an ally of the turtles, a love interest of either Donatello or Casey Jones, and she is a fully trained Kunoichi. And another thing, she's voiced by Mae Whitman, who also provides the voice of Little Suzy from Johnny Bravo, Katara from Avatar: The Last Airbender, and Amity Blight from The Owl House. If you guessed April O'Neil, then you sir are correct.