Gill-man's species (exact name unknown) is the species that Gill-man belongs to.
Gill-man's species can best be described as piscine amphibious humanoids. They are fully capable of breathing in and out of water. They possess large, webbed hands with sharp claws on the tip of each finger. They also possess superhuman strength and extremely tough scaly skin.
- ↑ UMU Looks Inside Dr. Jekyll's Briefcase & Reveals a "Dark Universe"!. Biscotti, Steven. universalmonstersuniverse.com. May 23, 2017.