In Divine Beast form he looks like a juvenile amethyst beast, with 108 amethyst spikes on his back. In human form, he looked like a young man, much like Bebe.
Reisgem is hot headed and his personality is very similar to Bebe's, which is why the two of them get along very well.
He is the leader of the amethyst beasts in the Amethyst Mountains. He tried to kill Linley and his group, but they managed to escape into a cave inside a lake, and Reisgem didn't follow since he doesn't like water, and the less intelligent amethyst beasts, can't sense spiritual power.
Later, when Linley mastered Worldwalking, he tried to test it out. This resulted in him stumbling upon a cave, where Reisgem trapped him. Reisgem told him that the only way Linley could escape was by fusing Throbbing Pulse of the World and Gravitational Space, and a little something special. Linley eventually succeeded after about 600 years. After this Reisgem gave Linley a black stone.
After Linley came in trouble with Mosi Bagshaw, the sort of relationship Linley had with Reisgem saved his skin and even allowed Linley for Mosi to treat him with kindness as a way to give Reisgem face.
It is later revealed by the Matriarch of the Vermilion Bird Clan that the mother of Reisgem was, in fact, a Sovereign of Destruction who resides in the Redbud Continent, known as the Redbud Sovereign.
During his participation in the Planar Wars, he joined forces with Linley and Bebe, where he appeared in his human form and used both his Sovereign Artifact, a Javelin, and his innate ability, Amethyst Space. He gifted Linley and Bebe an entire canteen filled with Destruction-type Sovereign's Might as a way of paying 'salary' and of goodwill since they joined his squad.
- He is very formidable and has a very good spiritual and material defense, but he is afraid of Bebe's innate ability
- He is a Commander of Purgatory
- He gave Linley and Bebe a full canteen of Sovereign's Might
- Along with Bebe, Leylin, and Reihom, he is one of the very few people who witnessed Linley's Soul Mutate with four Divine Clones (by far the only person who successfully did so since the creation of the Coiling Dragon universe)