Sweetie Belle

Sweetie Belle (born February 2, 2003) is a school-age unicorn filly and Rarity's youngest sister. She makes her first major appearance in the episode Call of the Cutie. Sweetie Belle and her friends, Apple Bloom and Scootaloo, call themselves the Cutie Mark Crusaders.

Sweetie Belle played Eliza in Monster House (CartoonFanBoy91 Animal Style)
she is a singing girl on a tricycle

Sweetie Belle played Arista In The Little MerDuck
she is a mermaid girl.

Sweetie Belle played Riley Anderson in Inside Out (Animal Style)
She is a girl

Sweetie Belle played Cylindria in Apple Bloom and the Ghostly Adventures
She is a Pink Girl with Red Glasses

Sweetie Belle played Pinky in Trixie and the Ghostly Adventures
She is a ghost

Sweetie Belle played Marci in Daredevil (paulodejesus18 version)
She is a lawyer.

Sweetie Belle played Ultron in Avengers: Age of Sweetie Bot
She is a robot.

Sweetie Belle played Sideshow Mel in The Cutie Mark Crusaders/The Simpsons: Four Great Women and a Manicure and My Little Pony/The Simpsons: Macbeth
She is a sidekick