Meranno

Meranno, also known as U-Man, is an Atlantean villain who served the Axis powers during World War II, clashing repeatedly with the wartime superteam the Invaders. A treacherous enemy of Namor's people, he weaponized his Atlantean physiology against the Allied heroes.

Meranno surfaced in the Bronze Age pages of The Invaders #3 (1975), conjured by the legendary Roy Thomas and Frank Robbins, and this Marvel villain proved durable enough to resurface across three decades and multiple series — from The Invaders to The Avengers to The New Invaders. With team ties stretching to both the Avengers and Alpha Flight, Meranno occupies a surprisingly wide corner of the Marvel universe for a character whose catalog appearances number in the teens. Sharing pages with heavyweights like Captain America, the Vision, and the enigmatic Circe speaks to the caliber of company this character keeps. If you love digging into the layered, war-era mythology that Roy Thomas built so lovingly for Marvel, Meranno is exactly the kind of discovery that rewards the dedicated reader.