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Regulus, a green-furred cosmic lion with a pink mane and red eyes, roaring with claws extended against a starry void
The provided image is an artist's interpretation made for this entry. Details may differ from official depictions. The character and franchise remain © their respective rights holders.

Regulus

Character

Regulus is a lion shaped Youma that Nephrite conjures out of the constellation bearing the same name, turning up in a single first season episode of the Sailor Moon anime. Rather than harvesting energy, the beast exists purely to spring a trap on Sailor Moon and Tuxedo Mask.

Alignment: Dark Kingdom
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Appearance

The creature takes the shape of a lion coated in turquoise fur, its mane and tail tinted a pale rose. Large red eyes dominate its face, and small clusters of that same rosy fur sprout at the back of each paw.

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Personality

As a summoned attack beast it displays little beyond raw ferocity. It barrels toward whatever target it is pointed at and answers to no one but Nephrite, who calls it into being and banishes it again at will.

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History

Poring over the stars, Nephrite discovers that Sailor Moon's one vulnerability is her devotion to Tuxedo Mask. Seizing on this, he masquerades as the masked ally and mails love letters to the young women across the Azabu-Juban district. When Sailor Moon shows up at the Shinjuku MS Department Store to rescue Naru Osaka, Nephrite channels the star Regulus itself to birth the lion from its namesake constellation. The monster lunges as Tuxedo Mask arrives, and Moon Tiara Action merely glances off it. The two duck into an elevator, which is precisely the snare Nephrite laid, and once they are caught he withdraws the beast. Regulus stands out as the only monster of the day the anime never actually defeats.

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Frequently Asked Questions

What is Regulus in Sailor Moon?

Regulus is a lion shaped Youma that Nephrite conjures from the constellation of the same name in a single episode of the first Sailor Moon season. Rather than draining energy, the beast exists purely to spring a trap on Sailor Moon and Tuxedo Mask.

What does Regulus look like?

Regulus takes the form of a lion with turquoise fur, a pale rose mane and tail, large red eyes, and small clusters of rosy fur at the back of each paw.

How does Nephrite use Regulus to trap Sailor Moon?

Nephrite poses as Tuxedo Mask and mails love letters to lure Sailor Moon to the Shinjuku MS Department Store, then summons Regulus from its namesake star to attack. The chase pushes Sailor Moon and Tuxedo Mask into an elevator, which is the actual trap Nephrite set.

Is Regulus ever defeated in Sailor Moon?

No. Regulus stands out as the only monster of the day in the anime that is never actually defeated. Nephrite simply withdraws it once its purpose as a trap is served.

What makes Regulus different from other Sailor Moon monsters?

Regulus is notable as the first male and non-humanoid monster of the day in the Sailor Moon anime, and as the only one Sailor Moon never manages to destroy.

Sources & Information

Looking for more on Regulus? The Sailor Moon Wiki on Fandom has a dedicated page with community notes.

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This content is original writing by Daddy Jim Anime based on the Sailor Moon anime series, manga, and official materials. Sailor Moon was created by Naoko Takeuchi, published by Kodansha, and animated by Toei Animation. All rights to Sailor Moon and its characters belong to their respective owners. Episode and chapter references are cited where applicable.

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