Sonju's horse (Anime)

Sonju's horse is the unofficial designation of a demon horse ridden by Sonju in The Promised Neverland.

Appearance
Grey in color, Sonjus horse is quite thin, with its ribcage and many of its bones visible. It has a long, white mane, covering its eyes, and a single horn.

Promised Forest Arc
Before a group of demons could capture Ray, Sonju and his horse save Ray in the nick of time.

Trivia

 * Sonju's horse bears a heavy resemblence to the Sleipnir, the noble steed of Odin in Norse Mythology.