The Cockatrice is a monstrous villain appearing in AdventureQuest Worlds. It is a Harbinger of Disease and Rot and a servant of the evil King Alteon the Imbalanced.
The Cockatrice made its home in the ruins of a dungeon owned by its former master, the Dark Warlock. The Cockatrice called out to one of the Mirror Realm's Loremasters and killed said Loremaster, stealing his guarded treasure in the process - an egg that many believed to contain the 13th Beast of Order. The Cockatrice then guarded the egg within the dungeon.
Knowing this, Mirror Drakath called the AQW hero to the Mirror Realm, and they arrived at the Dark Warlock's dungeon, where they found the Cockatrice guarding the 13th Beast of Order's egg. They fought, and the hero managed to leave a scratch on the Cockatrice's body, just before being knocked down by it. The Cockatrice attempted to turn the hero to stone, but Drakath stopped it by firing a blast of Order at it, forcing it to jump away. Gaining an idea, the hero asked Drakath to give him/her his sword, and he/she then used it as the Cockatrice attempted to turn him/her to stone with its glare once more. Unfortunately for itself, the Cockatrice turned itself to stone when it looked at its own reflection within Mirror Drakath's sword, and thus the 13th Beast of Order's egg was safe from its clutches.
- The Cockatrice's ability to turn others to stone was taken from the Basilisk's stony gaze from the Harry Potter franchise.