From Diablo Wiki
The Diablo III development team likely added her into the game as a full-fledged NPC to not only propel the player forward through the narrative, but to also provide more context into the world of Sanctuary and to enrich the character of Leoric himself, and the (often convoluted) relationship he had with Lazarus and the subjects of his kingdom.
She greets you as you enter The Cursed Hold and tasks you with freeing the spirits of her imprisoned subjects so that they may rest in peace. There is an achievement (Cursed Captives) to be earned if you do this within two minutes.
The next time you come across her you will witness how she came to lose her head.
Quests and Events
Queen Asylla is involved in the following Quests, Events and Bounties:
LoreDiablo himself, and the actions of Archbishop Lazarus. Even within the Diablo I manual, which was rich with writing and lore, she isn't mentioned.
Asylla appears in spectral form as a quest-giver NPC brandishing her own head, giving the player her blessing to free the souls of six of her subjects who died under the dark reign of Diablo within the Tristram Cathedral. Shortly before the player leaves the Hold, they may stumble upon a scene featuring Leoric standing by as Asylla is strapped into a guillotine and beheaded by Lazarus. Watch the whole scene and a page from Lazarus's Grimoire will drop.
- Queen Asylla's Journal - (required for A Quick Study achievement)
- A Page From Lazarus's Grimoire - (required for Taking Notes achievement)
Queen Asylla is in some way involved in the following achievement(s).
| Cursed Captives
|10||Free 6 prisoners in 120 seconds in the Cursed Hold while in a solo game.|
|Characters & NPCs Import. Chars Rumoured Diablo 3 NPCs Diablo 2 NPCs Diablo 1 NPCs Minor A-K Minor L-Z Fanmade|
|Diablo III's Possible NPCs|
|NPCs of Diablo II||
Achilios - Adria - Akara - Albord - Aldric Jitan - Alkor - Anya - Arkaine - Asheara - Assur - Atma - Augustus Malevolyn - Baerna - Banagar - Benjin - Brek - Buyard Cholik - Camylle - Celestia - Cornelius - Darrick Lang - Diomedes - Drognan - Edgewulf - Elora - Elzix - Emilye - Fara - Farnham - Fautzin - Galeona - Garda - Gheed - Gillian - Gorst - Greiz - Griswold - Guthwulf - Hagan - Halbu - Hanos Jeronnan - Hargo - Hays - Hratli - Hrothwulf - Humbart Wessel - Hunfrith - Hyram - Icharion - Jace - Jamella - Jerhyn - Jodas - Juris Khan - Justinian IV - Kabraxis - Kara Nightshadow - Karybdus - Kashya - Kentril Dumon - Kethryes - Korlic - Kreghn - Ku Y'leh
Lam Esen - Larzuk - Linarian - Lysander - Malah - Mat Hu-Ring - Meshif - Mirakodus - Mordecai - Natalya - Nefriti - Nellia - Nihlathak - Nor Tiraj - Norrec Vizharan - Ogden - Ord Rekar - Orlif - Ormus - Oskal - Palashia - Pepin - Qarak - Qual-Kehk - Riordan Nesardo - Sadun Tryst - Salene Nesardo - Sardak - Sarnakyle - Septumos - Simon - Talic - Taramis Volken - Tilgar - Tobio - Toko - Tylwulf - Vischar Orous - Warriv - Wirt - Wulfgar - Xazax - Zagraal - Zayl - Zorea