TV-Series
Description
Queen Nehellenia is the principal antagonist of the anime season Sailor Moon SuperS and the ruler of the Dead Moon, a dark realm that exists as a shadow counterpart to the Moon Kingdom. She commands the Dead Moon Circus, a traveling troupe that arrives on Earth during a solar eclipse to invade the dreams of sleeping people and harvest their dream mirrors.

Her background is rooted in tragedy and vanity. Long ago, she reigned over a lonely kingdom located on a cold asteroid in the darkness, where she was adored by her subjects but had no true friends or loved ones. Because of this isolation, she came to love only herself, and her beauty became the center of her identity. When she asked an enchanted mirror to show her future, it revealed that she would one day grow old and lose her looks. Terrified by this vision, she became obsessed with staying young and beautiful forever. To preserve her youth, she consumed the dreams of her own subjects, transforming them into hollow servants known as Lemures, and from them she built the Dead Moon Circus. She grew to resent the light and happiness of the Moon Kingdom and its queen, Serenity, and she coveted the legendary Golden Crystal, which was guarded by the priest Helios in the sacred land of Elysion. When Helios refused to give her the crystal, she kidnapped him and imprisoned him, and he later escaped into the dream world as the winged horse Pegasus. Queen Serenity eventually sealed Nehellenia inside a mirror, but before the seal was complete, Nehellenia cursed the Moon Kingdom to fall, a curse that contributed to the destruction of the Silver Millennium.

In personality, Nehellenia is proud, commanding, and deeply vain. She is cruel toward those who stand in her way and dismissive of the dreams and happiness of others, which she views only as fuel for her own survival. Beneath her regal cruelty, however, lies a profound loneliness. Her obsession with beauty is not simply arrogance but a desperate fear of losing the one thing she believes gives her worth, since she never learned to form genuine bonds with others. She is manipulative and patient, willing to work through servants and indirect schemes to achieve her goals.

Her primary motivations are to reclaim her lost youth and beauty, break free from her mirror prison, obtain the Golden Crystal, and conquer both the Moon Kingdom and Earth. During the events of Sailor Moon SuperS, she operates through her proxy, the witch Zirconia, who carries out her orders while Nehellenia remains trapped in the mirror world. The Dead Moon Circus searches for Pegasus, unaware that the winged horse is hiding within the dream mirror of Chibiusa, the young future daughter of Sailor Moon and Tuxedo Mask. When the Amazoness Quartet and other servants fail, Nehellenia eventually emerges in full, revealing her true form and engaging the Sailor Guardians directly. She is ultimately defeated when her illusions are broken and her aged, withered true appearance is exposed, forcing her back into her mirror prison.

In terms of relationships, Nehellenia serves as the dark mirror image of Queen Serenity, representing the darkness that stands opposite the light of the Moon Kingdom. She has a direct and antagonistic connection to Helios, whom she imprisoned and whose power she seeks, and through him an indirect connection to Chibiusa, whose pure dreams shield Pegasus. Her relationship with her own minions, including Zirconia, the Amazon Trio, and the Amazoness Quartet, is one of command and exploitation; the quartet in particular are shown to be under her control, and in later material they are revealed to have been corrupted into serving her. Her central rivalry is with Sailor Moon, whose compassion and belief in others' dreams stand in direct opposition to Nehellenia's selfishness.

Her development continues beyond Sailor Moon SuperS into the opening arc of the following season, Sailor Stars, where she is freed from the mirror by the villain Sailor Galaxia and encouraged to seek revenge against the Sailor Guardians. She uses a black mirror to terrorize them and captures several of her enemies, including Mamoru, who is left emotionally drained. During this confrontation, her tragic past is revealed, and when the Sailor Guardians offer her forgiveness rather than hatred, she experiences a redemption. She is reborn as a small child, given a chance to start her life over, and is shown beginning to build genuine friendships with her subjects, suggesting that her real longing was always for love and connection rather than beauty alone.

In terms of abilities, Nehellenia is a powerful practitioner of dark magic. She can fire waves of dark energy, use spiderlike threads to ensnare opponents, and withstand most direct attacks. Her defining power is her ability to enter and manipulate dreams, stealing the dream mirrors of others to sustain herself and trapping people in nightmare visions. She is also a skilled curse weaver, as demonstrated by the lasting curse she placed on the Moon Kingdom, and she can create and command numerous minions such as the Lemures who make up her circus. Her mirror magic allows her to communicate across dimensions, imprison others within reflective surfaces, and project her influence into the waking world. Her power ultimately depends on the stolen dreams of others, which is both her greatest strength and the source of her downfall.