Yato is shown to be a character who is typically very playful and childish with a sneaky side to him.Yato's real name is Yaboku. Which is the name he's been giving as a God of calamity.Yato is very caring of those around him, even though that may not be seen so easily when first meeting him. He's very brave, risking his life for Yukine, in order to prove his point. Yato's main goals appear to be becoming extremely popular as a God, which seems to be quite a sore point for him. He will leave his number anywhere and everywhere, and is shown to be writing on different surfaces - like bathrooms, trains and walls that are easily seen. When he does do jobs, he will often either be slaying phantoms or babysitting (and similar jobs). He's very humble, creative, and very out going when it comes to being himself. He's very childish to say the least. There are times when Yato appears very serious and mysterious, for instance when he meets with Nora. Yato can also be crude and unpredictable, although it is hinted that he can also be a cruel and merciless person. This is strongly implied by Kofuku, who introduces the rumor that he once killed a Shinki and several humans (according to Daikoku, this happened a long time ago, where the rule was "kill or be killed").
Hiyori is a kind-hearted girl with a strong sense of right and wrong. This is evident when she witnesses Yukine swindling money behind Yato's back which openly troubled her. Eventually, she confronts him to ask what he intends to do with it. She's also willing to risk her own life to save a complete stranger, which is shown when she pushes Yato out of the way of a bus, which resulted in her getting hit instead. While far from stupid, Hiyori can be a bit air-headed, at times having very strange priorities; when Yato explains that her 'tail' is actually a lifeline that connects her physical and ethereal forms and that she'll die if it's cut off, Hiyori's biggest concern is that she's not 'wireless', as opposed to why Yato waited until then to mention something so important. However, she is also quite perceptive of the feelings of others, such as when she was able to figure out that Yato wants to keep Regalias from seeing people waste their lives, as all of them are people who died while still wanted to live.
Yukine is first portrayed as being a bit cold and cruel. He is clearly upset and annoyed at the fact that he died, and became Yato's weapon, complaining about staying with someone like him. As a result of this and the fact that people cannot see him well, Yukine takes advantage of this and other people, stealing money, clothes, and even betraying Hiyori. Yukine though seems to feel jealous over others who are alive, upset about the fact that he is dead and cannot make friends and learn what other students do. He is also apparently afraid of the dark. When Yato is forced to punish Yukine, Yukine confesses all of his sins and apologizes sincerely, and escapes the temptation that hurts Yato as his Shinki. Yukine is visibly more upbeat after his punishment, befriending Hiyori more and requesting to learn what she does in school. Yukine also is more dilligent in his work as Yato's Shinki, working part time for Daikoku to earn money for the two of them.
Kazuma is a calm, serious, and sensible person. He cares greatly for Vaisravana/Bishamonten, calling her by a pet name, "Veena", as well as his fellow Shinki. He is also shown to be extremely loyal to his master, as well as responsible and trustworthy. He also honors his debts, particularly to Yato, who he begged to slay his fellow shinki to save Bishamonten. He is polite to everyone, regardless of if he is stressed or not. When he was just starting out as a shinki, he was shown to have no talent but is currently a blessed shinki, meaning he is hardworking and his loyalty and care for Veena motivated him to be the best shinki he could. He is a kind person in general and a good teacher, as he willingly teaches Yukine some techniques as his fellow blessed shinki. Despite his serious nature, he is shown to have a comical side, particularly when it comes to his loyalty/crush/mild obsession with Bishamonten. He also enjoys teasing his friends such as Yukine and Yato (writing on Yukine's face during practice and promising Yato a new phone but instead giving him a carrier pigeon). His actions in the past, of ordering Yato to kill Bishamonten's shinki clan, still haunts him as he feels like trash for not telling Bishamonten the truth and for feeling good about her needing him and having to rely on a Nora to save Bishamonten.
Despite being a fearsome god of war, Bishamon is shown to be quite generous towards her Shinki. She willingly accepts any wandering and troubled spirit, useful or not, and adds them to her family of sacred treasures. Due to her failure in saving her Shinki in the past, Bishamon decides to be more distant from them, depicting herself as a fierce god and making sure that they are not worried about her, which only resulted to them being more insecure and lonely. Due to her past with Yato, she was bent on vengeance and decided to destroy anything he held dear to himself. She goes as far as to almost disowning Kazuma when she finds out about his association with Yato. After finding out the true story about the death of her previous family of Shinki, Bishamon eventually lets go of her vengeance against Yato and slowly begins to be able to accept him as her ally.