Queen Beryl

クイン・ベリル

Queen Beryl serves as the primary antagonist across all iterations of the Sailor Moon franchise. Her name derives from the mineral beryl. Although she possesses vast magical abilities, she directs the majority of this power to transmit life energy, collected by her subordinates, to the entity known as Queen Metaria.
In the manga, Beryl was a beautiful woman living on Earth during the Silver Millennium. She loved Prince Endymion, but her feelings were not returned; upon finding him with Princess Serenity of the Moon, she was devastated. She later claims that possessing Endymion was her only motive for allying with the evil force from the sun, Queen Metaria. Corrupted and strengthened by Metaria, Beryl used her enhanced powers to rally Earth in a war against its guardians, the Moon Kingdom. She murdered Prince Endymion while he attempted to shield Princess Serenity, an act that drove the princess to suicide. Sometime afterward, Sailor Venus slew Beryl with the holy moon sword. A severely weakened Queen Serenity resealed Metaria and, before her death, sent her entire kingdom to be reincarnated on Earth. Beryl is described as being "reborn" when the Senshi encounter her again in the 20th century. As Queen of the Dark Kingdom, she communicates with Queen Metaria and commands her reincarnated generals—Jadeite, Nephrite, Zoisite, and Kunzite—to locate the Silver Crystal and defeat the newly awakened Sailor Soldiers. Ultimately, she fails to obtain the Silver Crystal and is killed once more by Sailor Venus, who impales her with a sword. As she collapses, she utters Endymion's name and whispers that she had always merely been watching him.
In the anime, Queen Beryl orchestrates various assaults on Tokyo's citizens while Sailor Moon, and subsequently the other Sailor Soldiers, search for the Moon Princess. She also abducts and brainwashes Prince Endymion to compel him to kill his lover. However, when he breaks her control and attacks her, she feigns fainting and pleads with Queen Metaria for additional power, which transforms Beryl into Metaria's vessel for the destruction of all life on Earth. Queen Beryl is soon vaporized alongside Metaria when Sailor Moon, having transformed into Princess Serenity, merges the power of the Silver Crystal with that of the Moon Stick.
She is generally depicted in a more tragic manner in the manga than in the anime, even showing a brief moment of regret as she realizes she can no longer reverse her actions.
In the English-dubbed anime, her origins are not mentioned; she is simply identified as the ruler of the Negaverse, an evil alternate dimension, from which she somehow escaped to attack this dimension. At the season's conclusion, Beryl is said to be merely banished back to the Negaverse upon her defeat by Sailor Moon.