Kon

Kon primarily serves as a comedic foil in the series; when not inhabiting Ichigo's body, his normal plushie body is treated with little respect and much disdain. The humorously cruel treatment he is always subjected to provides the comic relief in Bleach. One of the only people who gives him any respect is Chad; however, Chad ignores him most of the time. His plushie body is a knock-off of the main character of the popular TV show Carnivore Kingdom, named "Ponkichi", which happens to be Chad's favorite show. It was a prize from the shooting game in the Karakura Town Festival.[2] He is constantly stepped on and torn, at which point Ichigo will have Uryū Ishida repair the plushie. Uryū usually adds something unwanted or unnecessary when doing so, such as dressing Kon up like a designer doll. Uryū also sewed a Quincy cross on the back of Kon's head as revenge after Kon attacked Uryū for turning him into a doll.

Kon is quite perverted and often takes advantage of his form to get girls to hug him to their chest, which rarely goes as planned. After Ichigo becomes less dependent on Kon to transform, Kon comments on how he wouldn't mind taking Ichigo's body out for a spin again, saying that he'd like to go pulling up skirts because, as he puts it, "It's Ichigo's reputation that gets sullied". Kon is very fond of Rukia, calling her "sister", though this extends to basically any pretty girl

Kurosaki Isshin

In the beginning of the series, Isshin is portrayed as a silly, fight-loving father who is "extremely over-energetic"[3] and takes a keen interest in what his children are doing, but does it either offensively or with an all-too-happy tone, which elicits comical reactions from his kids, usually in the form of a kick. Isshin also seems to enjoy making fun of Ichigo and has a tendency to talk to the large memorial poster of his late wife Masaki, which he has pinned up in their kitchen, whenever he feels particularly emotional. Isshin is a big fan of Don Kanonji's TV show.

Despite his outrageous guise, however, Isshin can be serious and grim at times. On the date of Masaki's death, Isshin smokes a single cigarette in front of her grave, since she thought it made him look cool (she said it when they were dating). He reflects that it was the first and last time she ever complimented his appearance. He also told Ichigo that he shouldn't blame himself for his mother's death because she gave her life to protect him. In addition, during his confrontation with the arrancar Grand Fisher and the subsequent chat with Kisuke Urahara, he remains completely serious (aside from a short argument between him and Kon about his parenting, and another, albeit short, between him and Urahara after the latter likens him to his son).

Isshin appears to be an associate of Kisuke Urahara and possesses knowledge of Sōsuke Aizen's alliance with the Menos. He mentions in his conversation with Urahara that he encountered arrancar about ten years before the main storyline, though they were nowhere near as complete as Fisher. He also reveals to Kon that he has been aware of Ichigo's shinigami activities and Kon's substitutions since Grand Fisher's first attack. He also notes that he has never called Kon "Ichigo" while Kon is in Ichigo's body and that the traveling charm he gave Ichigo before he went to rescue Rukia was actually for Kon (it's a protection talisman). This shows the sensitivity and propriety that he possesses of his role as Ichigo's father, which is rarely portrayed in the series.

Isshin also shares a relationship with Ryūken Ishida not unlike that of their sons. When Ryūken discovers his son is missing, Isshin pays him a visit and the two chat about their respective styles of parenting. It is then revealed that Ryūken was aware of Isshin's status, and he comments on Isshin's powers.

Abarai Renji

Renji Abarai is an elite shinigami bearing the rank of 6th Division lieutenant, making him second in command of a sub-branch of the shinigami armed forces. Although first introduced as a deadly enemy, he has conflicting loyalties between his duties and Rukia, whom he grew up with. A brash and driven man, he holds both a deep respect and animosity towards his immediate superior, 6th Division captain Byakuya Kuchiki.

Uryuu Ishida

Though on the surface nothing more than the solitary class genius, Uryū Ishida is actually a Quincy, descendant of a line of priest-like hollow-hunting archers. He bears a deep grudge against all shinigami, including Ichigo, but comes to view Ichigo differently over time, eventually becoming an ally and friendly rival.

Urahara Kisuke

A mysterious and cheery man, Kisuke Urahara runs the Urahara Shop, a candy store that also sells supernatural items to shinigami. Despite his sanguine nature he is one of the most significant figures in the Bleach universe, bearing immense knowledge of the spiritual realms which he uses to mastermind the operations of the protagonists

Sado Yasutora

Yasutora Sado, better known as Chad, is one of Ichigo's few friends at school. He is a biracial (Japanese/Mexican) student who towers over his classmates. Despite his imposing appearance he is quite meek, and refuses to fight unless it is for the sake of another. He does not have awareness of ghosts at first, but can still touch hollows, and eventually is able to see them when he witnesses a group of children being attacked by a hollow. He discovers a unique ability that strengthens and armors his arms, enabling him to fight hollows.

Inoue Orihime

Orihime Inoue is a long-time classmate of Ichigo, closely linked to him by mutual friend Tatsuki Arisawa. She is effectively an orphan, as she and her elder brother Sora ran away from their abusive home at a young age, and her brother later died. Though initially devoid of spiritual powers, she begins to develop spiritual awareness and later obtains one of the most powerful healing abilities in the Bleach universe, able to completely restore a body to its previous state regardless of how severely it is wounded.