Eudial, fourth-strongest of the Witches 5 with a magic level of 78, serves the Death Busters hierarchy under Kaolinite and Professor Tomoe. Posing as Mugen Academy’s philosophy and etiquette instructor Yuko Arimura, she covertly manipulates students, using hypnotic rituals during events like a five-day training camp to harvest souls for the alien entity Pharaoh 90. Her strategy escalates when she implants a Daimon Egg into a cat, transforming it into a monster to ambush the Sailor Guardians. Though she temporarily overpowers them with fiery attacks, Sailor Moon’s Moon Spiral Heart Attack destroys her physical form, leaving only a disintegrating Daimon Egg. Revived alongside her coven by Kaolinite’s magic, Eudial resurfaces in her Yuko disguise, taunting Sailor Mars in the etiquette classroom and exploiting perceived vulnerabilities. Her resurgence falters when the Outer Sailor Guardians intervene, their combined assaults obliterating the Witches 5 permanently. Her striking appearance—long crimson hair in twin ponytails, scarlet eyes, and a red star-patterned crop top paired with black pleated skirts and baggy pants—echoes the mineral eudialyte, mirroring her namesake. Star-shaped earrings and bracelets accentuate her flamboyant style, completed by red high heels. Her abilities span pyrokinesis, levitation, instant wardrobe shifts, and soul-extraction rituals, positioning her as a fiery antithesis to Sailor Mars, contrasting their moral allegiances and elemental mastery.