|“||The second emperor of the Han Dynasty locked his least favorite wife in this urn for 10 years, to the day. They say you open it up, the same thing will happen to you.||„|
|~ Balthazar Blake about the history of the Grimlock.|
The Grimlock is a magical and inescapable prison that resembles an urn. The Grimlock first appeared in the beginning of the movie at the Arcana Cabana.
Like the Grimhold, it is designed to magically trap and imprison anyone. When opened, any target that is intended to be sealed inside it by the user will be dissolved into a mass of dust before being sucked in, much like Grimhold. Like the Grimhold, the Grimlock itself appears to show images of the people who are/were trapped in it, because it shows Balthazar and Horvath after they are sealed inside.
Unlike the Grimhold, however, its sealing powers only last for 10 years on each of its victims, as both Balthazar and Horvath emerge from inside the Grimlock 10 years after being sealed away in it. Also similar to the Grimhold, anyone whom escapes from the Grimlock after their 10 years of imprisonment manifests as a mass of black dust/ashes before their body fully restores instead of as a mass of disgusting organism/substances. After Maxim Horvath was released, he tossed the Grimlock out the window, in order to destroy it, thus leading the assumption that whoever is trapped in the Grimlock will be destroyed also.
Second Emperor of Han Dynasty once use its power to seal his least favorite wife. It later fell into other people's hands (presumably a few times), until it arrived at the hands of Balthazar during his journey in China, presumably in the same year where he met Sun Lok. He later brought it to the Arcana Cabana in New York, presumably not to sell it due to its powers being beneficial to him and intended to use it someday due to having similar properties with the Grimhold's imprisoning abilities.
When the young Dave accidently released Horvath, Balthazar was forced to lock himself and Horvath inside the Grimlock for 10 years before they both escaped seperately to prevent Horvath from killing the young Dave.
The Grimlock was destroyed by Horvath after his escape before he tried to completely destroy Balthazar, who was still trapped in it by dropping it, but failed as Balthazar escaped from it in time.
- As powerful as the Grimlock is for imprisoning people, it appears to be as vulnerable as any other object that can be shattered.