The She-Devil appeared in the 17th episode of Ultraman Ace.
She-Devil was originally a girl named Damiko who desired to see her mother again after her recent death. Yapool appeared, offering her the chance to make the wish a reality as long as she served him. She agreed to the terms and was transformed into the monster, She-Devil. She attacked people with fireflies while acting as an innocent little girl. When TAC came to investigate, Damiko befriended Minami of the team. Eventually, the two developed a strong friendship to the point where She-Devil and Damiko were separated from each other. The demon attempted to fight Minami and escape, but was killed by her.
Her death triggered the summoning of Yapool who, in an attempt to salvage the plan, caused She-Devil's fireflies to combine and form Hotarunga. The choju quickly sucked both women into its abdomen before rampaging around. The rest of TAC took note of the beast and using a special gas, freed Damiko and Minami. Minami reunited with Hokuto and transformed into Ultraman Ace to fight Hotarunga. After a short battle, the monster was put down and destroying what was left of Yapool's contract. With TAC finally leaving, Damiko and Minami gave each other, the latter hoping that she would let go of the grief she had for her mother's death.
- Human Actor: Chika Nojima
- Height: 5 ft
- Weight: Unknown
- Origin: TBA
- Powers and Weapons
- Gymnastics: The She-Devil can do backflips to avoid the blast from the guns that these people are wielding.
- Nocturnal: The She-Devil can see very well in the dark.
- Firefly Summoning: The She-Devil can summon these fireflies which look a lot like green circles to attack its enemies.
- Teleportation: The She-Devil can teleport itself just by fading out of existence.
- Sword: The She-Devil wields a sword in combat.
|Ultraman Ace Kaiju|
|Verokron | Yapool | Chameleking | Vakishim | Garan | Aribunta | Giron Man | Brocken | Alien Metron Jr. | Doragory | Muruchi II | Gammas | Zaigon | Alien Antira | Unitang | Sabotendar | Baraba | Ace Killer | King Crab | Cattle God | Cowra | She-Devil | Hotarunga | Black Pigeon | Android Couple | King Kappa | Zemistlar | Aprasar | Aprasar Fairy | Space Mask | Black Satan | Giant Yapool | Mazaron Man | Yojo | Mazarius | Alien Orion | Sphinx | Alien Hipporit | Lunaticks | Undergroundmon | Gitagitanga | Red Jack | Baktari | Coakes | Bad Baalon | Kaiteigagan | Dreamgillas | Soundgillar | Machless | Snowgiran | Namahage | Alien Fire | Firemons | Alien Steal | Kaimanda | Shishigoran | Iceron | Woo II | Fubugirara | Onidevil | Gasgegon | Daidarahoshi | Hanzagiran | Verokron II | Yapool Woman | Univerlages | Aquarius | Alien Revole | Signalion | Geegon | Alien Simon | Jumbo King|