Killer whale trainer
Yu-Gi-Oh! episode 68: "Legendary Fisherman, Part 1"
|Domino City Aquarium worker|
The aquarium worker came upon Mako Tsunami in the killer whale's tank while he was attempting to fish in it. She angrily berated him before collapsing due to illness; Mako caught her and discovered that she was feverish. She insisted that she had to perform with the whale in the upcoming show, but Mako volunteered to take her place.