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Kanato is almost never seen without his beloved Teddy wrapped safely in his arms.
In Haunted Dark Bridal, he usually wears a black hoodie vest with a long-sleeved white shirt and red ribbon underneath. The vest's straps extend to his upper arms. He wears this attire with black shorts and red pants bearing a checkered pattern that reach above his knees.
In MORE,BLOOD, he wears a beige sweater with a black, polka-dotted dress shirt underneath and an un-clipped red bow tie. He will occasionally don glasses.
His school uniform consists of the black school jacket over a maroon-colored vest with a red, string tie and a white undershirt with a ruffled Victorian collar, which are worn with black pants. He also wears short black knee-socks and brown dress shoes.
Kanato was born the middle child of Cordelia, and raised alongside his two brothers, Ayato and Laito. Unlike Ayato, he and Laito were given more freedom, yet the former did not receive enough attention from his mother that a boy his age required. Cordelia, who referred to him as her "Little Songbird", often called for him to sing to her, which he was happily inclined to.
Kanato as a child craved his mother's attention and would self-harm just to get her attention though these efforts were largely in vain. Kanato did love Cordelia as a child however, this never reached her because she shows zero interest in him aside from his singing which sexually aroused her.
Kanato received his Teddy bear from Cordelia which she received from one of her lovers but had no need for. He prefers not to play so much with his brothers and remain alone with his only friend - Teddy.
He has been murdering living people and making them into 'dolls' since he was a very young child. Cordelia encouraged this behaviour stating she loved his dolls and thinks he should make more. Many of these dolls were his mother's lovers once they were of no further use to her.
When he finds Cordelia's bloodied corpse in the rose bushes (upon being pushed from the balcony by Laito) he burned what remained of her, laughing as he did so and put her ashes inside Teddy.
Kanato's disturbed, child-like personality is a fact and he has had a very weird and eccentric personality even as a child, usually staying alone, talking to his dolls, self-harm, or turning others into wax dolls. Around others, Kanato usually acts very spoiled, childish, and demanding usually emotionally blackmailing either with tears or hysterical tantrums to get his way, in fact, he is quite mentally unstable and shows signs of psychotic behavior when angered. He is shown to be moved to tears easily which can quickly be replaced by loud yelling. He adores sweets and hates things that are bitter.
Perhaps his most prominent trait is his attachment to his precious teddy bear, Teddy, whom he is almost always depicted holding and will become enraged if a person touches or speaks "familiarly" to him, let alone attempts to take him from him. This is shown when he snaps at the heroine for referring to Teddy as if she "knows him".
However, Kanato can freely be categorized as a "yandere type" of character due to the bonds he is capable of having, even if they still are quite twisted. Kanato is childish but overly possessive and even if he's not always thinking clearly, he must decide the future not only for himself but also for the heroine.
Since he was a child, he was ignored by his mother and spent much of his time by himself rather than playing with his brothers. During his childhood, Cordelia mainly used him for her entertainment in order for her "Little Songbird" to sing to her. He stated she ordered him to sing till his vocal cords bled. Still she would pay more attention to his uncle Richter while Kanato is singing for her.
Like Cordelia, Karlheinz largely neglected his son. Like all the Sakamaki siblings' Kanato hates his father.
Kanato knew about the relationship between Richter and his mother which they have never hid, and disapproved of Richter.
Ayato and Kanato, though they supposedly "detest the mere presence" of one another, actually have a somewhat brotherly relationship. This relationship is shown during the countless times Ayato steals Kanato's Teddy just to have fun with him. However, even Ayato would stop in front Kanato's tears even though he says he simply hates this kind of bother. Ayato calls Kanato a 'hysteric'.
Kanato is triplets with Laito and Ayato. They were seen to be close as children, trying to catch bats together however, they would later grow apart. He states that since Ayato and Laito were born from the same womb as him he cannot dislike them and loves them so much he is disgusted by them.
Like all vampires, he has an inhuman strength as well as increased speed, increased vision and hearing, and smell. Being a vampire, he also has fast healing and healing saliva.
He appears to be capable of teleporting from nowhere in an instant.
He is shown to have control over fire.
On the night of a full moon, vampires possess the ability to fly.
Summons the soul of (not right word) maniac from hell into "Teddy" with the incantation, "Dico questo Bazu ma abita nell'anima della magia".
He can control and summon familiars. He can also turn his dolls into familiars - animating nonliving objects
- When he was a child, Kanato always sung Scarborough Fair to Cordelia.
- He hates eating spicy food.
- He is right-handed like his triplet brother Laito. 
- His foot size is 25cm.
- He is the only triplet with purple hair similar to Cordelia's. He takes pride in this and is slightly narcissistic because of it.
- His favorite dessert is raspberry pudding.
- He is mentioned to be something of a necrophile - although not necessarily a necrophiliac.
- He likes sweet foods and hates coffee stating that it is bitter.
- When he was small, his mother used to let Richter drink her blood in front of him.
- ↑ Diabolik Lovers MORE,BLOOD Visual Fan Book
|Sakamaki Brothers||Ayato Sakamaki • Kanato Sakamaki • Laito Sakamaki • Shu Sakamaki • Reiji Sakamaki • Subaru Sakamaki • Kino|
|Mukami Brothers||Ruki Mukami • Kou Mukami • Yuma Mukami • Azusa Mukami|
|Tsukinami Brothers||Carla Tsukinami • Shin Tsukinami|
|Others||Karlheinz • Beatrix • Cordelia • Christa • Richter • Seiji Komori|