Santa Claus

Santa Claus is a person who has a contract with the Doll Devil allowing them to control several different bodies, one of which poses as a Devil Hunter from Germany.

Appearance
One of the bodies of Santa Claus is a short, mostly bald elderly man with a thin mustache and beard.

One of the bodies of Santa Claus is a busty dark-haired woman with a mole under her eye.

Personality
Santa Claus is a possibly lecherous being who asked for several children of either gender as his reward for bringing in the Chainsaw Devil from Japan, apparently for use in contracts and for pleasure.

They have no issues with forcibly recruiting large numbers of civilians to work for them by transforming them into puppets. they have shown no regards for those who seem to care for them as once Tolka had subdued Denji, Santa Claus turned him to a puppet to communicate with the Darkness Devil and complete the contract..

During battle Santa Claus displayed a more ruthless tactic by transmitting their pain across puppets all over the world. In order to eliminate Quanxi, Santa had brought back the personalities of some puppets to dishearten and kill Denji.

International Assassins arc
Makima and Kishibe discuss the potential threats that may be coming from overseas, with Germany's Santa Claus being among them. Makima states that she heard a rumor that he died of old age and Kishibe acknowledges that they should pray that is the case.

In Germany a military man sat down at the same bench as Santa Claus who was reading a newspaper. He told Santa Claus that Christmas has come early,and that they want him to bring in the Chainsaw Devil from Japan. When asked for his desire for a reward he stated that he wanted to adopt four good-looking children for use in contracts and for pleasure.

Santa Claus travels to Japan where he uses his contracted abilities to convert a crowd of people on a street into dolls.

He hides within a coffee shop nearby to a department store that Denji and his bodyguards are visiting. He orders his dolls to attack once Denji enters the store. He continues to send in an entire army of puppets after Denji in preparation for delivering a 'present'.

It was revealed that Santa Claus was working with the master and has sacrifice three of his currently unknown children and himself to use one of his contracts to transport the Devil Hunters to a place that is considered as Hell.

Abilities
Makima and Kishibe hold him in high regard as the most dangerous threat towards Denji amongst the world's assassins and devil hunters as they say it will all be over if he uses his devils against them.

Devil Contracts
Curse Devil Contract: A contract with Santa Claus. Hell Devil Contract: Santa Claus has contracted with the Hell Devil. Darkness Devil Contract: In exchange for bringing Denji to Hell, the Darkness Devil gave Santa Claus a small piece of its flesh, which they ate, which gave them a boost in several abilities such as:
 * In exchange for the loss of sensations on several of her fingers, Santa Claus can use the Curse Devil's power, the contract requires the nail to be stabbed 4 times.
 * Transportation: Santa Claus can transport any living beings to hell by naming the place they are currently in. However not only he must sacrifice three of his children, but he also needs to sacrifice himself as well meaning he can only use this ability once.
 * Enhanced Strength: Santa was strong enough to hit Denji through several floors and walls.
 * Enhanced Speed: Santa was fast enough to jump from the ground to the top of a multi-storey building in a few seconds, they were also able to catch several arrows that were as fast as bullets.
 * Regeneration: Santa was able to heal her wounds by being in darkness, recovering from fatal injuries in an instant.
 * Change in Appearance: Santa became much taller, grew many more arms, and had many other changes to their body that resembled dolls.

Doll Devil Contract: Shared with the master, Santa Claus has a contract with the Doll Devil for an unknown price.
 * Doll Creation: Santa Claus can create dolls out of people to obey his will. The effect is caused by touch and spreads contagiously as each doll touches another person, allowing them to create an army of dolls out of a crowd. The dolls can also transform one of their arms into blades including themselves. However Santa Claus must remain in the nearby area in order to maintain control of their army of dolls, and the conversion process has no effect on fiends or devils.
 * Perfect Doll Creation: By instilling emotions that only humans can have into a puppet, such as respect, worship, admiration, and guilt, Santa can turn people into perfect dolls, which are able to make devil contracts in Santa's place.
 * Mind Transfer: Once they are defeated by Denji, Santa Claus states that they can transfer their consciousness to any one of the puppets they have made across the world; this is expanded upon once in cosmos library, Santa had stated that flooding information into their brain would carry into every puppet, as shown later in the chapter.