Queen Beryl is the first major villain players encounter across all versions of Sailor Moon. Her name comes from the mineral beryl, fitting for a character defined by her crystalline beauty and hard edges.
Beryl's most distinctive trait is her obsessive, unrequited love for Prince Endymion. In the manga, she was a beautiful girl living on Earth during the Silver Millennium era. When she discovered Endymion with Princess Serenity, it shattered her—and that heartbreak became the turning point of her entire existence. She's explicit about this: siding with Queen Metaria, the evil force from the sun, was purely about getting Endymion. Metaria corrupted and empowered her in exchange, and Beryl used those new abilities to turn the entire planet against the Moon Kingdom. She killed Endymion while he protected Serenity, which drove the princess to suicide. Sailor Venus eventually killed Beryl with the holy moon sword, but not before Queen Serenity managed to seal Metaria away again and send her whole kingdom to be reborn on Earth.
When the Sailor Senshi encounter Beryl again in the 20th century, she's operating as Queen of the Dark Kingdom, channeling power from Metaria and commanding her four reincarnated generals—Jadeite, Nephrite, Zoisite, and Kunzite—to hunt the Silver Crystal and eliminate the awakened Soldier scouts. She fails, and Sailor Venus kills her a second time, driving a sword through her body. In her final moments, Beryl whispers Endymion's name and admits she'd only ever been watching him. The manga portrays her with genuine tragedy; even as she falls, there's a flicker of regret that she's crossed a line she can't uncross.
The anime takes a different approach. Here, Beryl orchestrates attacks on Tokyo's citizens while the Sailor Soldiers search for the Moon Princess. She kidnaps and brainwashes Endymion, forcing him to kill his own lover—until he breaks free and turns against her. Desperate and panicking, Beryl begs Metaria for more power, becoming Metaria's vessel for planetary destruction. When Sailor Moon transforms into Princess Serenity and combines the Silver Crystal with the Moon Stick, both Beryl and Metaria are vaporized.
The English dub strips away her entire backstory. Here she's simply the ruler of the Negaverse, an evil alternate dimension, with no mention of her origins or motivations. At the season's end, she's merely banished back to the Negaverse rather than destroyed.
Content compiled by AnimeList.moe from publicly available sources.