Horn of Proteus

The Horn of Proteus is a fictional item featured in comic books published by Marvel Comics. It first appeared in Fantastic Four, Volume 1 #4 in May, 1962.

Description & History
The Horn of Proteus is an ancient Atlantean relic and is shaped like a coral horn. At the beginning of the modern Age of Heroes, the former regent of Atlantis, Prince Namor, the Sub-Mariner declared war on the United States, mistakenly believing that they were responsible for the destruction of his kingdom in the Southern Ocean. He used the Horn of Proteus to summon forth Giganto - a huge whale-like creature, which he claimed was the largest thing on the planet Earth. Using the horn to control the creature, the Sub-Mariner attacked New York City. He fought up against the neophyte superhero team, the Fantastic Four. When it appeared that he might be defeated, he prepared to use the horn again, but the Human Torch used his powers to create a tornado via a thermal updraft that whisked the Sub-Mariner away.