Nuckelavee

The Nuckelavee Grimm (unofficial) is a large horse-like Grimm that wanders around the continent of Anima.

Appearance
The Nuckelavee Grimm is a horse-like creature with an equine main body and a skinless humanoid creature that is fused with it. It has long arms that it drags along the ground, with forelegs shaped like claws and hooved hindlegs that leave a characteristic hoofprint. On the back of the human torso is a variety of weapons from previous battles stuck in it.

History
Its appearance was first hinted at by its hoof print in Shion in "Remembrance", which Lie Ren and Nora Valkyrie discover. Later on, its hoof print was shown again in "Two Steps Forward, Two Steps Back", but it was unnoticed by Ruby Rose and Jaune Arc.

Its first physical appearance was in "Kuroyuri", despite only appearing as a silhouette from the smoke of the Grimm's rampage, causing havoc in the town of the same name. The creature is responsible for the death of Ren's parents and the destruction of Kuroyuri. It was shown heading back to the same village years later after leaving a cave filled with lost and discarded weapons, encountering Team RNJR.

Abilities and Powers
The Grimm has been credited with the destruction of Oniyuri and played a role in the destruction of both Shion and Kuroyuri. Despite it's jerky movements it is quite fast and uses its unnaturally stretchy limbs to attack.It's screams are also very discomforting to the ear.

Trivia

 * The Grimm appears to be based on the Nuckelavee, a creature from Orcadian mythology with origins from both Norse & Scottish mythology.