Zirconia (SMCU)

Zirconia is the Dead Moon's Chief of the Dark Arts and the kingpin of the Dead Moon Circus.

Profile
Zirconia is the head and the creator of the Dead Moon Circus. She is hired by Queen Nehellenia to create the Dead Moon Circus using an ultra-hard-to-make potion and help her rule the world. She was created from Nehellenia's fears of becoming old and ugly (which is why she has this appearance). She has a pet eyeball named Zircon, who takes pictures of their targets for her, and can usually be found on Zirconia's staff.

Zirconia can shoot blue energy waves, shoot spider-like threads, or duplicate herself.

Super Chibi Moon World
In the Cinematic Universe, Zirconia first appeared in the film Super Chibi Moon World. During a solar eclipse, Zirconia appears from above the sky and throws a potion onto the Juuban District to transform it into the Dead Moon Circus. In the process, demonic carnival attractions arose from the city and most of its inhabitants were turned into brainless zombie minions called Remless. Zirconia then used magic orbs to transform a tiger, a hawk, and a fish into the Amazon Trio, who became her minions.

The film’s protagonist, Sailor Chibi Moon, spots Zirconia’s hideout, a floating circus tent, after clearing all three domains of the Dead Moon Circus and defeating the powerful Demon Soul Mask (which is Pink Sugar Heart Attack-resistant). Eventually, Zirconia decided that the Amazon Trio were no longer needed and executes them, to Chibi Moon’s horror. The two have a heated battle until Chibi Moon gets knocked out. Before Zirconia could finish off Chibi Moon, the spirit of Queen Serenity arrives, armed with a sword. Serenity then uses her sword to easily decimate Zirconia, carving in her insides and effectively killing Zirconia.