|Alignment:||Black Moon Clan|
|Lives:||Nemesis, later Tokyo (anime only; after being purified by the Silver Crystal)|
|Occupation:||Member of the Spectre Sisters|
|Family:||Koan, Berthier, Petz (sisters)|
|Aliases:||Miss Calaveras (manga), Miss Karasu Vegas (musicals)|
|First Anime Appearance:||Women Should Be Strong and Beautiful! Rei's New Killer Move|
|First Manga Appearance:||Act 18 Shinryaku SAILORVENUS|
|First PGSM Appearance:||N/A|
|English Name:||Avery (Mixx manga), Calveras (Kodansha manga)|
|Actors:||Akiko Hiramatsu (anime), Tomoe Hanba (Crystal), Jennifer Griffiths (dub), Cassandra Lee Morris (Viz dub)|
Calaveras was a member of the Black Moon Clan and the second oldest of the four Spectre Sisters. She accompanied Rubeus and her sisters to 20th-century Earth in order to locate Chibiusa and find the Silver Crystal.
Calaveras was very similar to Petz in the anime: very arrogant and haughty, and very contemptuous of humanity. Unlike Petz, however, Calaveras was not very gung-ho about her mission, and her laidback attitude resulted in many fights with Petz, whom she always ended up being paired with on missions whether she liked it or not. Calaveras loved to tease all of her sisters, which led to arguing between Koan and Petz. Like Petz, she seemed to have some affection for Berthier, and had normal conversations with her. She was also more interested in men than Petz, who claimed to dislike them.
On top of the dark powers given to her by her Black Moon pedigree, Calaveras had the more natural gift of persuasion, as well as the ability to pretend to an amicable personality (which she tended to lack in reality). This tended to gather large crowds of victims with little trouble, as well as get under Petz's skin. She was also very pretty, which she rubbed into Petz's face from time to time.
Calaveras was eventually healed in episode 72, when Petz used the Black Moon Stick not only on the intended victims, the Sailor Senshi, Koan, and Berthier, but also on Calaveras, injuring her. As she reeled from shock, Sailor Moon reassured her that she would be all right, and she decided to stay with Sailor Moon because of her act of forgiveness. After the sisters were reunited, they opened a cosmetics stand, where Calaveras became the spokesperson.
- Dark Beaut - A whip used by Calaveras to attack her enemies.
Calaveras' only appearance in the manga was in Act 18. Vowing revenge for the deaths of her sisters, Calaveras, the spiritual medium of the Black Moon, embarked on Code 004, Operation Re:Birth. Disguised as the medium Miss Calaveras, she channelled the spirit of Rubeus into her to sway the people of Tokyo into believing that the Sailor Senshi were trying to destroy Earth, while the Black Moon were coming to save them.
When Sailor Venus confronted her, Calaveras first summoned the spirits of Sailor Venus' friends - Sailor Mars, Sailor Mercury, and Sailor Jupiter - through several of the Senshi's close friends, and showed them being tortured. She then summoned her dead sisters to throw an energy blast at Sailor Venus. However, before Sailor Venus could be captured, Sailor Moon and Tuxedo Mask defeated Rubeus and then killed Calaveras.
- Spirit Energy Attack - An attack that Calaveras used to channel her sisters' powers into an energy blast.
Calaveras appeared in the musical Tanjou! Ankoku no Princess Black Lady and its revision, where she was played by Ado Endou. She disguised herself as the famous medium "Miss Karas Vegas," who claimed she could communicate with extraterrestrials. She eventually met her demise, along with her sister Koan, at the hands of Sailor Uranus' World Shaking attack.
- Spirit Energy - Calaveras' primary attack in the musicals.
- Silent Corridor - Calaveras used this attack against Sailor Venus.
- Dark Beaut - An attack which seemed to consist of an exploding beam of light.
- Kamaitachi - An attack which inflicted a series of swift, slicing attacks against all opponents.
- Calaveras is named for the mineral calaverite, a gold telluride.
- In the German dub of the anime, she was named "Calaverite," matching her namesake mineral. However, the pronunciation of her name was inconsistent throughout the season.