I got this all from wikia.com xD
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Kanji: 逆巻 アヤト
Romaji: Sakamaki Ayato
Sign: Aries
Birthday: March 22nd
Age: 17 (physically, unknown actual age)
Status: Alive
Race: Vampire
Ethnicity: Japanese
Gender: Male
Height: 174 cm (5'8")
Weight: 62 kg (137 lb)
Blood Type: O
Eye Color: Green
Hair Color: Reddish-Brown
Occupation: 2nd-year High School Student
Affiliation: Sakamaki Family
Relatives: Karlheinz (father)
Cordelia (mother)
Richter (uncle)
Shu (paternal older half-brother)
Reiji (paternal older half-brother)
Laito (for tradition younger/biologically older triplet brother)
Kanato (for tradition younger/biologically older triplet brother)
Kino (paternal half-brother)
Subaru (paternal younger half-brother)
Burai (maternal grandfather)
Menae (maternal grandmother)
Hobbies: Basketball
Favorite Food: Takoyaki
Game: Diabolik Lovers ~Haunted Dark Bridal~ (Prologue)
Manga: Diabolik Lovers Anthology
Anime: Episode 1
Japanese Voice: Hikaru Midorikawa
English Voice: Chris Patton (anime)
Ayato Sakamaki (逆巻 アヤト Sakamaki Ayato) is the third son (biologically the fifth) of the Sakamaki household. Ayato along with Laito and Kanato, the triplets, are the sons of Cordelia and Karlheinz, the Vampire King.