Fluttershy (Team-X)

Fluttershy is one of the Main Protagonists of My Little Pony: Friendship is Magic and a Character of Yu-Gi-Oh!: Team-X

World Duel Team Carnival Preliminaries
Fluttershy appeared in the First Episode calling Twilight a Monster and didnt appeared until the Second Series of Team-X

Adventure to Crystal Empire
Fluttershy got kidnapped by Sombra, before she saw Cillian and Twilight working together and happy that they've won.

Epliouge: Elements of Harmony Duel
After the Concluded of the Final Duel, Fluttershy appeared with Princess Celestia and really happy that she has an adventure.