Stellar Eclipse is a male Pegasus. He has a brown coat, a black and purple striped mane and tail, purple eyes, and a cutie mark of a sun symbol consisting of a pink circle surrounded by eight triangles. He walks with a wheelchair cart due to his spinal muscular atrophy type 3. Stellar Eclipse was introduced to the series by the make a wish foundation by the wishes of an 18-year-old named Sylvain-Nicholas LeVasseur-Portelance, who plays Stellar Eclipse and also has spinal muscular atrophy type 3.