She's the Empress and Mother of all Xenos. She gives birth to Millions of Them
Vanessa regarding the Acheron Queen
Birth[]
When the Arachnids Shot the Derelict and Released the Trilobite and Impregnated the Pilot and Emerged from his Chest and Crashed on LV-426. And made a Nest in a Room and Layed Eggs
Discovered by Hadley's Hope[]
She is Found when Jones confronted Thousands of Xenomorph Eggs. The Team found the Eggs and Released a Bunch of Facehuggers and Impregnating them with Alien Embryos. Then saw Dozens of Chestbursters Emerged from them, The First one is Shadow to Emerge from the Impregnated People.
Making a Nest in Hadley's Hope[]
She moves out of the Derelict with her Warriors and Made a Nest in Hadley's Hope's Heat Room and Impregnated the Heat Engineers with More Face-Huggers and Grew a New Ovirpositor and continued Laying more Eggs and Her Warriors Collected more Colonists and Mobilzing them to become hosts to more Face-Huggers. And she Layed More eggs
7 Years Later[]
7 Years After the Acheron Queen made a Large Hive in Hadley's Hope. She is Running out of Hosts for her Eggs so She Would have to Move to Earth with her Children