When Zoycite attempted to turn Molly into a monster, her energy beam missed and hit an actor instead, turning him into the monster Akan. Akan attacked by trapping people in balls of moss, which would slowly expand and make them suffocate. Melvin, dressed up as Tuxedo Mask, tried to fight him. Molly tried to protect him, and was trapped in a ball of moss. Zoycite forced Sailor Moon to give her the one crystal she had, or else all Akan's victims would die. Sailor Moon handed over her crystal, and Zoycite left everyone. Sailor Moon healed Akan with Moon Healing Activation, and the balls of moss vanished.
His name is a pun on "Aka", the Japanese word for "red", and also refers to the lake named "Akan" (阿寒) which is home to Marimo, which are the green fuzzy ball-shaped algae that Akan throws and encases his victims in.