Beretta

Beretta (ベレッタ) is the bodyguard of Ramiris.

He was originally a Greater Demon who was summoned to fulfill a contract of inhabiting a Golem created by Rimuru to be the guardian of Ramiris' Labyrinth for 100 years. As soon as he possessed the Golem and was named, he evolved into an Arch Doll.

Later on, under the agreement of all parties involved, the original contract was annulled and Beretta permanently became Ramiris' subordinate as her aide and Rimuru acted as a kind of 'secondary master' as the original contractor and creator of his physical body, meaning it was still possible for him to receive power from Rimuru through the soul corridor and evolve.

Appearance
When summoned by Rimuru, Beretta was a Greater Demon, much more muscular compared to a Lesser Demon. On both side of his head horns protruding. With black skin, dressed in expensive clothes.

A doll necessarily uses spherical joints. But surprisingly, the golem came out just as Rimuru had imagined it. In order to move the golem all that is needed is to direct magical energy into the joints. Rimuru made the face look like his mask; the golem was as large as a human, 180cm tall to be precise.

After receiving the name Beretta, he began to evolve. He first formed into a circle, but then chest, head, hips, arms, and legs formed, along with a face. His face was now hidden behind a mask and, instead of the black skin, long black hair now adorned his body. His skin was pale, and bloodless. The eye slits on the mask glowed crimson.

Background
He was summoned to inhabit a golem created by Rimuru to protect Ramiris and the Labyrinth. The length of the contract is a hundred years. The payment for the contract was Rimuru's magical energy, which he already received from the summoning. Afterward, he could keep the body or throw it away. He requested that after he has protected Ramiris for a hundred years, he be allowed to serve under Rimuru. And If he only promised him this, he would never bother him with another payment.

Later Guy Crimson convinced him (with a bit of a threat included) that serving two masters at the same time is a bad idea and that he should rather choose one true master to serve. Beretta agreed to truly follow Ramiris from that point on, but ultimately Beretta had his own idea how to "implement" this. He led Ramiris into making the Jura Tempest Federation their new "headquarters." One thing led to another and in the end Ramiris recreated the Labyrinth space underneath the Tempest Collosseum, managed together by Ramiris and Rimuru, making Beretta's plans a success.

Personality
Beretta was originally a Greater Demon and while his physical form is that of a magical doll, his personality and mindset have not seemed to change based on conversations between Beretta and others, and the fact that other characters like Treyni the dryad, who was placed into a wooden doll made from her true tree body, didn't change despite inhabiting a new form.

Being a Demon of the Black lineage, Beretta takes on many characteristics that match or are similar to his progenitor, Diablo, due to the fact that all Demons take on the basic personality traits of their respective progenitors. Like Diablo, Beretta holds a high level of etiquette and respect. He is rarely shown to be overtly distressed or emotional, instead carrying a relaxed air. Like Diablo this, however, masks a ruthless and cold nature which he exposes to his enemies in battle. In the midst of combat his demeanor is calm even when he brutally dispatches his foes. When he slew another doll, Viola, who had been under the control of Clayman, he only showed a fleeting interest in learning its name after he tore out its core while remarking about how fun it will be to take and study Viola's weapon at his leisure at a later time, making it clear that he felt nothing at her demise nor any hesitation to end her.

Befitting a quirky demon from the noir lineage, Beretta is overjoyed to research with Ramiris.

Trivia

 * He is the only Demon to be named by Rimuru after a firearms brand rather than cars. According to Rimuru, he named him as such because "something about the golem's form reminded me of the beautiful lines of that famous family of firearms."
 * Incidentally, Chevrolet also produced a car model called Beretta from 1987 to 1996.
 * The author mentioned that he originally intended to name all golem-based demons after firearms and name homunculus-based demons after supercars. However, Beretta ended up being the only golem-based demon appearing in story.
 * It is implied in Episode 23: Saved Souls of the Anime that Primordial Noir was supposed to answer Rimuru's summoning in the labyrinth instead of Beretta, but he had gotten ahead of him.
 * Beretta as a Demon is of the color black, making him one of Diablo's descendants. Much like Diablo, Beretta is whimsical and values things other than strength. All demons of a certain color take on the basic personality traits of their progenitor.
 * Diablo casually comments on the Light Novel that he was so jealous of Beretta he tried to dispose of him in secret, however he was stopped with the simple phrase "This body was created by Lord Rimuru, damaging it would displease him." Which infuriated him but didn't pursue the matter further.

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