*Fonda Fontaine, known in Japan as Emi Ayukawa, is the head of the female Obelisk Blue dormitory at Duel Academy. In addition, she's the gym instructor as well as the school's head nurse.

Mostly, Fonda was seen taking care of teachers and students whenever they were injured and doesn’t play that large of a role until the third year. When Duel Academy was transported into the desert, Fonda was transformed into one of the Yubel possessed Marcel Bonaparte's Duel Ghouls upon trying to protect the sick and injured Blair Flannigan from the onslaught of zombified students trying to get into the infirmary. She Dueled against Jaden Yuki and ultimately lost though she and the accompanying Duel Ghouls quickly recovered afterwards due to Duel Ghouls being tireless. She was turned back to normal like the rest of the people who were zombified after Duel Academy is returned to its proper place from an alternate dimension.

When Zane Truesdale washes up on the beach of Duel Academy, she cared for him in the infirmary. She, along with the rest of world, was pulled into the World of Darkness and later revived after Jaden defeated Nightshroud.

Fonda primarily plays with an Anti-Cure Deck, reversing recovery into effect damage, though her Deck tends to vary in the video games.*