Morga is the first Youma to appear in the first season of Sailor Moon in the first episode, as well as the first Youma to gather human energy for the Dark Kingdom to revive Queen Metaria. Morga heavily discounted jewelry charged with dark energy under the disguise of Naru's mother, whom she attacked and locked in the basement of her own store. While disguised as her mother, Morga attempted to strangle Naru for questioning her over the loss of consciousness customers were experiencing from having their energy drained from the jewelry they had purchased.