Missy, known in Japan as Ran Kochou (胡蝶蘭 Kochō Ran), is an Obelisk Blue student infatuated with Zane Truesdale to the point where she wears a locket with his picture in it. In the beginning of the second season, Missy Duels Zane's younger brother, Syrus in hopes of pursuing her love interest in the Pro League, and if Syrus won the Duel, which he does, he gets promoted to Ra Yellow. She lost to Syrus' "Super Vehicroid Jumno Drill", thereby missing out on the chance to go pro.
She tends to call people "hon" when she Duels.
"Ran Kochou" is a pun on the flower Phalaenopsis aphrodite, which is called Kochōran in Japanese.
Missy plays an Insect Deck, primarily centered around Summoning her "Insect Princess" and increasing its strength by forcing control of her weaker Insect-Type monsters over to her opponent's side of the field through the Field Spell "Insect Garden", then forcing them to attack using "Insect Pheromone". Aside from her anime-only cards, all of her cards seen in her Duel against Syrus are from Invasion of Chaos.