Imp

Imps  are Creatures of Grimm with somewhat humanoid features.

An Imp is first seen fused with a horse-like Grimm to compose the Nuckelavee. An Imp, as its own separate being, has yet to be seen.

Appearance
The Imp has an emaciated, somewhat humanoid torso with rib-like protrusions and pectoral-like bone plates on its chest, as well as a series of bone spikes along its upper spine. Each of its two long, thin arms ends in a hand with only two fingers. The shape of its head is similar to that of a human's but with a longer, pointier chin.

Its mask bears resemblance to a human skull, but the holes that serve as the eye sockets are elongated and slope downward. On its forehead, at the top of its mask, are two long, curved horns. Strips of flesh connect its upper and bottom lips, but it is able to tear these strips to fully open its mouth.

History
Through unknown means, an Imp became fused with a horse-like Grimm, creating the Nuckelavee that killed Lie Ren's parents and attacked Kuroyuri, Oniyuri and Shion. The Nuckelavee was later killed by Lie Ren, with help from Nora Valkyrie, Jaune Arc and Ruby Rose.

Powers and Abilities
Imps are able to stretch their arms over long distances and rotate their torsos without injury. They can also emit a scream that is very discomforting to the ear.

Trivia

 * The Volume 6 Opening features a number of Grimm arms trying to grab Ruby in the Brunswick underground. While Volume 6 introduces the Apathy Grimm, the opening uses the Imp arms as a placeholder.