Found on the Omnitrix Expansion Pack, this alien was discovered by Ben 10,000 and sent back to his younger self to use in the Mighty Invasion.


Grimm's powers range from possesion ,flight ,psyconic energy blasts,and fields,a malvolent intent leaking visage, clawed hands, and control over the darkness around him.


As a Necronuerite his home world is actually stationed in the middle of a black hole.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.