Leviathans

Leviathans are a fictional type of creature featured in the Marvel Cinematic Universe. They first appeared in the 2012 feature film The Avengers. They are named after the sea monster that appeared in the Hebrew Bible.

Description & History
Leviathans are giant space-borne crustaceans from an unknown star system. They are known to inhabit the area near the Sanctuary asteroid cluster, and are used as weapons of war by the alien race known as the Chitauri. The Chitauri outfitted the Leviathans as war-ships and sent them through a dimensional portal to Earth. They provided massive battle support during the Battle of New York. Iron Man tried to lure a Leviathan away from major population centers, "bringing the party" to the rest of the assembled Avengers. The Hulk succeeded in downing the Leviathan with a single punch. Another Leviathan found itself tangling with the Hulk as it smashed its way through several skyscrapers.

Iron Man breached the dimensional aperture, sending a nuclear missile through it that destroyed the Chitauri Command Center. Once this signal was destroyed, the remaining Leviathans on Earth fell to the ground dead. One plummeting beast resulted in the deaths of hundreds of people.

A Leviathan corpse was appropriated by Wolfgang von Strucker and brought to a Hydra safe house laboratory in Sokovia. When the Avengers raided Strucker's compound, Iron Man found the secret wall that led to an underground laboratory where the Leviathan corpse was stationed.

Appearances

 * Avengers, The
 * Avengers: Age of Ultron - 1 in Hydra compound and in Tony Stark's vision.
 * Captain America: Civil War - Footage from the Battle of New York shown by Ross to the Avengers.
 * Spider-Man: Homecoming - Flashback to the Battle of New York.
 * Daredevil: The Ones We Leave Behind - Newspaper photography only.
 * Iron Man 3: Prelude
 * Thor: The Dark World: Prelude