U-Man

U-Man (Meranno) is a fictional character appearing in American comic books published by Marvel Comics. U-Man was created by Roy Thomas and Frank Robbins and first appeared in The Invaders #3 (November 1975). He is an Atlantean warrior and scientist who, due to his hatred for Namor the Sub-Mariner, allies himself with Nazi Germany, leading to his banishment from Atlantis. He willingly undergoes Nazi procedures to enhance his size and strength, and takes on the alias U-Man. Despite his villainous actions, he has occasionally aided superhero teams in the modern Marvel Universe. U-Man's powers include breathing underwater, surviving on land indefinitely, and enhanced strength, stamina, durability, speed, agility, and reflexes, thanks to Nazi science. He is also trained in warfare.