Shinigami In Death Note

In the Death Note series, they are a race of extra-dimensional beings who survive by killing humans to extend their own lives. Shinigami are not responsible for every death that occurs. People will eventually die regardless of whether or not the Shinigami pay attention to them, but a Shinigami can end their lives sooner than intended to extend their own lifespan.

Ryuk 

Ryuk is a bored Shinigami that drops a Death Note, a notebook that allows the user to kill anyone simply by knowing their name and face, into the human world in order to have relief from his boredom. It is picked up by Light Yagami, a bright high school student who uses it in an attempt to create and rule a utopia cleansed of evil, with him at the helm as a god.

Rem 

Rem is the Shinigami who gives Misa her Death Note. Rem possesses two Death Notes. Her appearance is quite skeletal, with long, spinal cord-like arms and bone-like skin. She views most humans with contempt, seeing Shinigami as the more evolved race. Also, while Ryuk is ambivalent to Light's success or failure, Rem actively assists Misa, having inherited Gelus's love for her. She is even willing to sacrifice her life to defend Misa. For Misa's sake, however, she still assists Light in his schemes.

Sidoh 

Sidoh is the Shinigami whose Death Note was stolen by Ryuk. By the time he realizes this, however, the note has already changed hands several times, ending up in the hands of Mello's gang. Sidoh wears heavy clothing, obscuring most of his features, and his head is wrapped in bandages. He shares Mello's great liking for chocolate, similar to Ryuk's liking of apples. Sidoh is fairly timid; Mello frightens Sidoh, despite the fact that Mello is a human. After Light regains the Death Note from Mello, he returns it to Sidoh to keep him from interfering.

Gelus
Gelus appears in a flashback when Rem explains how to kill a Shinigami. He is a small, doll-like Shinigami who appears to be patched together out of mismatched fabric. He only has one eye, despite having two eye sockets. In the flashback, Gelus uses his Death Note to kill Misa's destined murderer, a crazed stalker, against Rem's protests. Gelus is reduced to a pile of something that was not sand nor dust, as punishment for extending a human life, leaving behind only his Death Note.

Armonia Justin Beyondormason
Armonia Justin Beyondormason, is a briefly featured Shinigami who informs Sidoh that his Death Note was stolen by the Shinigami Ryuk and gives him the rules for different situations. As his names suggests, Justin's appearance is that of a skeleton adorned with all manner of jewellery. Justin is the right-hand man of the Shinigami King and sits on a throne. Highly intelligent, Justin knows everything there is to know about the Death Note, and Shinigami often go to him in trouble.

Midora
Midora is a large, salamander-like Shinigami with stubby limbs. Unlike most Shinigami, she does not wear any clothing or accessories. She enjoys moist weather but loathes dry seasons. Her enormous size gives her a dominating presence. Midora appears to enjoy bananas in a similar vein to how Ryuk enjoys apples.

Shinigami King
The Shinigami King, also known as the King of Death, is the ruler of the Shinigami. An unseen character in the main series, the Shinigami King governs the Shinigami and controls distribution of the Death Notes. It is not made clear if he creates them or just has a certain supply, as he is unwilling to replace lost ones. He appears to at least write the rules for the Death Notes, but whether or not he enforces them himself is unclear. The Shinigami King is regarded as a sort of father figure by lesser Shinigami, and is said to be almost immortal.