"Why could thou not let us be? Didst thou not see why Ariamis created this world?" — Priscilla, the Crossbreed

Crossbreed Priscilla (Japanese: 半竜プリシラ, Hepburn: Hanryū Purishira, lit. 'Half-dragon Priscilla') is an optional boss found in the Painted World of Ariamis and a character in Dark Souls. She is initially non-hostile and will ask the player to leave the world without fighting.

Her soul can be used to ascend a +10 Halberd or Whip into the Lifehunt Scythe. As with other dragon bosses, the player can also obtain a special weapon, Priscilla's Dagger, by cutting off her tail during combat.

If she is hostile to the player, attempting to leave by jumping off the ledge will result in death instead of exiting the Painted World. The only two ways to leave the world if she is hostile is to kill her, as it is impossible to warp out of the Painted World with the Lordvessel or to not have used the bonfire in the Painted World, so that the player can warp out with the use of the Homeward Miracle or a Homeward Bone. However, Homeward and Homeward Bones can only be used to exit the Painted World if it was entered by warping with the Lordvessel, as using either after entering through the painting sends the player to the bridge at the start of the area.

Priscilla cannot be attacked while in her vanishing animation. This should be taken in consideration by players looking to cut off her tail.

Having sins absolved by Oswald of Carim will return her to neutral disposition, enabling the player to cut her tail, as well as keeping the Painted World as a place for invasions if desired.

The visual effect of Poison or Toxic can be used to track Priscilla when she's invisible. Striking her with Lightning weapons will also produce a visual effect indicating her location.

A Dark Souls III character named Yorshka resembles Priscilla in her general appearance, her draconic features, and her voice. She also shares Priscilla's associations with snow, incarceration, Anor Londo, and the Darkmoon covenant. Yorshka is friendly to the player and incapable of combat.