The Kalphite Queen is a powerful boss monster in the game Old School RuneScape. She is known for her high combat level and unique mechanics, making her a challenging opponent for players. The queen resides in the Kalphite Lair, which is located in the desert region of the game. Players can summon the Kalphite Queen by defeating her minions, the Kalphite Soldiers and Kalphite Guardians. She has two forms, each with different attack styles, and drops valuable loot, including the Kalphite Queen's pet and various rare items. Defeating her requires strategy and preparation.