Skull Devil

Skull Devil, or known as The Big One, is the main antagonist of the 2017 action/adventure film Kong: Skull Island, the second installment in Legendary's MonsterVerse. He is the alpha of the Skullcrawlers who prowls on Skull Island and Kong's arch-nemesis who is responsible for murdering his species, leaving Kong as the only survivor on the island.

Background
Skull Devil is responsible for the extinction of Kong's species, and is the most feared creature on Skull Island as he has been looking for Kong to kill.

Kong: Skull Island
During the attempted assassination of Kong by Preston Packard, Skull Devil bursts from the lake and heads quickly to Kong, who kills Preston with his fist and then begins to fight against him while James Conrad escapes. Skull Devil injures and subdues Kong before he pursues the survivors, who are running to the waiting boat.

Skull Devil soon catches up to them and Cole attempts to sacrifice himself by blowing up himself and Skull Devil up with grenades strapped to him. However, Skull Devil sees this and whips Cole away with its tail into the side of a mountain where the grenades explode, killing Cole. Before Skull Devil can engage in killing the survivors, Kong shows up with a giant boulder and smashes it on Skull Devil's head before the two monsters begin their epic battle. During the fight, Skull Devil wraps his tail around Kong and throws the giant ape onto a wrecked ship where Kong becomes entangled in heavy chains of the ship itself. Before Skull Devil can kill Kong, he is distracted by gunfire from Hank Marlow's boat with mounted AA guns.

Distracted, Skull Devil turns his attention to the boat where the guns cut off, leaving them defenseless to the Skullcrawler until Mason Weaver (stood atop a hill/mountain area) shoots him in the eye with a flare which then explodes, blinding Skull Devil. This distraction allows Kong time to free himself and use a propeller attached to a chain like a flail, before he lands a vicious blow on Skull Devil's back. He then uses the chain to pull the Skullcrawler toward him and uses the propeller as a shuriken to slice Skull Devil's throat open, apparently killing him. However, Weaver had been knocked off the hill during the battle and had caused her to fall into the water below, but Kong manages to fish her out, unconscious.

However, Skull Devil is still alive and attacks Kong once more. In the ensuing fight, Skull Devil uses his prehensile tongue to wrap around Kong's fist to devour Weaver. As Skull Devil pulls her into his mouth, Kong uses all of his strength to pull his fist out with still Skull Devil's tongue around it, but also pulled out his throat and organs, finally killing the Skullcrawler and avenging the deaths of Kong's kind.

Personality
Skull Devil had better self-control than the smaller Skullcrawlers. This was seen when he appeared only once Kong was subdued by Preston Packard. He also seems to have a hint of sadism as he licks Kong's face maliciously after he has been tangled up in a shipwreck's rudder chain during their battle. Skull Devil was also shown to have a deep desire of killing and eating humans, which was shown several times when he diverted his attention from Kong to James Conrad and Mason Weaver, implying that he acts not only from primal instinct, but some degree of malice and cruelty. Skull Devil also demonstrates some intelligence when he swats Earl Cole away with his tail before the grenades can detonate.

Powers and Abilities

 * Immense Strength: Skull Devil is undoubtedly the strongest of all the Skullcrawlers, as he grappled and wrestled against Kong, and even threw him a considerable distance, despite the giant ape weighing 158 tons.
 * High Durability: Skull Devil's durability also topped that of his species, as he was fine after Kong smashed a boulder on top of his head, a tree branch right across the face, and sliced his throat with a ship's propeller.
 * Genius Level Intellect: Skull Devil was smarter than the other Skullcrawlers as well, considering the fact that he knocked Earl Cole away when he tried to get Skull Devil to devour him while he was holding grenades that was about to detonate.
 * Prehensile Tail: Skull Devil's long prehensile tail was able to constrict unfortunate victims such as Kong.
 * Prehensile Tongue: Skull Devil had a long triple-forked prehensile tongue that he would use to grab prey. However, it was connected to his internal organs, so if it were to be pulled out, his organs would be yanked out as well, as he would die within seconds.

Trivia

 * It is unknown if Skull Devil is the parent of the other Skullcrawlers or if he is just the alpha of the pack.