Leonus

Leonus is an Inhuman — a member of Marvel's Hidden Race of superpowered beings — who debuted alongside Black Bolt, Gorgon, and fellow Inhumans Stallior and Aireo. His lion-evoking name suggests Terrigenesis-derived traits, as is common among Inhumans.

Prowling out of the Silver Age in 1968, Leonus is one of Marvel's Inhumans — that extraordinary Hidden Race whose corner of the Marvel Universe has fascinated readers for decades. Debuted in a landmark King-Size Special by Gary Friedrich and the incomparable Marie Severin, this feline-named figure keeps genuinely royal company, sharing pages with the mighty Gorgon and the silent sovereign Black Bolt himself, alongside fellow Inhumans Stallior and Aireo. His appearances are concentrated in the classic Amazing Adventures and the prestige Marvel Masterworks: The Inhumans collections, making him a rewarding discovery for anyone diving deep into Inhuman lore — a Silver Age original whose name has quietly persisted across more than five decades of Marvel history.