Zaïre

Appearance
Little Black is described as an adorably pouting puppy like creature that looked like a deer, but had paws instead of hooves. His black fur actually had patches of jet black scales on it. While his tiny head had what looked like tiny bumps where horns would eventually grow in. However, this was heavily contrasted by majestic swirls of white fur and a single pearl like scale on its forehead.

Chapter 192 - "Jester 1", we see little black talking about him able to transform into a little boy.

Chapter 198 - "How I Feel 2", Dyon promises Little Black to live like a normal child his age, and when Little Black is older, Dyon will accompany him in exterminating Little Black's parent's enemy. He is bestowed the name of Zaire Sacharro at the end of the chapter. Which means "river that swallows all rivers".