Tomboyish Name

Web Animation

 * The main character of Hazbin Hotel is Charlie, the Genki Girl princess of Hell (and a Badass Bisexual) who is trying to help her subjects through redemption and rehabilitation. Her real name is Charlotte, but considering that her character profile has her real name literally scratched out in favor of her nickname, it's easy to see what name she prefers.
 * Monster High: Frankie Stein

Western Animation

 * The Loud House:
 * Subverted; Leni sounds like a man's name (Lenny), but the girl in question is one of the most feminine members of the cast. Leni is named after Lennie from Of Mice & Men.
 * Lynn is a Passionate Sports Girl whose name is a Gender-Blender Name. Her full name is "Lynn Jr. Loud" and she's named after her father.
 * The episode "'L' for Love" reveals that Luna has a crush on someone named "Sam". The very end of the episode reveals that Sam is a girl.
 * Steven Universe has Jasper. She's named after a gemstone whose name just happens to also be a male given name.
 * Total Drama stars Izzy, which may or may not be short for Isabella. Revenge of the Island has Jo, who is a straight-up tomboy, disliking anything even remotely girly and is often confused for a guy by Dumb Jock Lightning.