To spy on Nephrite
Sailor Moon's Moon Tiara Action
During the episode, Nephrite fights the Sailor Senshi and is at a disadvantage. Sailor Moon is about to attack him with her tiara when Naru jumps in front of him to protect him, forcing Sailor Moon to stop the attack. Yasha, who had been spying on Nephrite the entire time, then attacks him under the assumption that he has the Silver Crystal, though he actually has the star crystal. The crystal falls to the ground and as Naru picks it up, Yasha lunges at her demanding she give her the crystal. Nephrite then blasts Yasha in the face with a fireball, breaking her mask. Yasha, infuriated that Nephrite would betray the Dark Kingdom and defend a human, reveals her true form and attempts to kill him with her horns, but is instead killed by Sailor Moon's Moon Tiara Action. Her final words were "You have destroyed me!"
- Yasha initially has the appearance of a human woman with smooth hair,wearing a mask and robe. Yasha's face in human form is never shown. When the mask is destroyed, she reveals her true form: a hideous demon with large horns.
- Her mask is scene in the first opening in a photo.