Uriel

Uriel (誓約之王) is one of Rimuru's Ultimate Skills. It is the evolved form of the Unique Skill Unlimited Imprisonment mixed with a selection of Rimuru's subordinates' Skills conducted by Raphael and the effects of Beelzebuth's Food Chain, as well as Rimuru's remaining Common Skills and Extra Skills from before his Demon Lord evolution.

It is the crystallized form of his believers' loyalty. It causes Rimuru to feel an overwhelming sense of safety, as proof of his bonds with his comrades.

Abilities

 * Unlimited Imprisonment (無限牢獄): Entombs the target in a complex number of spatial dimensions.
 * Law Manipulation (法則操作): Black Fire and Thunder. Total magical control. Total control of the properties of heat and inertia. The ability to freely store and remove heat from the Stomach. It is also capable of altering reality. Rimuru's version of this ability also allows him to use the skills he obtained via Food Chain.
 * Universal Barrier (万能結界): Provides absolute defense with a multilayer barrier and the severing of space between both sides.
 * Spatial Domination (空間支配): A movement ability, allowing the user to freely switch between spaces for which they are aware of the coordinates.

Trivia

 * Uriel is the name of an archangel.