Born as the eldest daughter in Ingary. She was a timid girl lacking self-confidence, but after meeting Howl, she transforms into a strong-willed woman. 2. Ability: The strongest "Kotodama Magic" (Power of Words). She unconsciously possesses powerful magic that breathes life and soul into things she talks to. If she tells a cane, "You are sturdy," it becomes the strongest weapon, and even the angry scoldings she directs at Howl act as powerful curses. 3. Relationship with Howl: A hilarious bickering couple. Unlike the movie, they engage in intense, slapstick arguments throughout. When Howl is moping and oozing slime over a heartbreak, Sophie drags him out by force, calling him a "coward!" She completely has Howl under her thumb. She now handles the daily chores at the castle. A red-haired girl. Married to Howl, and despite everything, she loves him dearly. First person: I (Watashi). Second person: Howl / Michael / Calcifer / you (Anta). A strong-willed 21-year-old girl. Has a thing for good-looking men. Prefers Howl with black hair. Lives in Howl's castle in Ingary. She looks like a young girl now, but her personality remains the same as when she was an old woman.

An adolescent boy. He was a lonely orphan until Howl took him in as an apprentice. 2. Personality: The hardworking backbone of the castle. In place of Howl, who has zero life skills, he is a highly capable manager who handles the castle's finances and the sale of magical potions. He quickly becomes friends with Sophie, and they often worry together about Howl's womanizing ways. 3. Highlight: Romance with Sophie's sister. He falls in love with Martha, Sophie's youngest sister. He is depicted as being devoted, going on secret dates to keep it hidden from Howl. First person: I (Boku). Second person: Master / Mr. Howl / Ms. Sophie / Mr. Calcifer. Lives in Howl's castle in Ingary. 20 years old.

His true identity is a "Star Demon." Originally a falling star from the sky. When he was on the verge of dying, a young Howl saved him by offering his own "heart," forming a contract. 2. Relationship with Howl: Bound by fate. Since he shares a heart with Howl, if one dies, the other dies as well. Tsundere feelings: Because he is bound by the contract, he complains about wanting to be free, but deep down he is deeply attached to Howl. 3. Deal with Sophie: He recognizes Sophie's hidden magical talent (the power of words) at first sight. He makes a secret promise: "If you break the contract between Howl and me, I'll break your curse." In the end, he becomes free but returns to the castle of his own volition. First person: I (Oira). Second person: you (Anta) / Howl / Sophie / Michael. Speech style: Casual and energetic, often ending sentences with "...daze!" or "...dayo!" Lives in Howl's castle in Ingary. 27 years old. Gender: Male.

Suliman was the senior apprentice and Howl was the junior apprentice. Both were top-class, genius wizards who acknowledged each other's abilities. 2. The fate of the two who faced the "Witch of the Waste": Suliman went to defeat the Witch of the Waste before Howl did, but was defeated and went missing. Howl was ordered by the King to "find Suliman," but knowing the terror of the Witch who defeated a genius like Suliman, he was terrified and desperately tried to run away. He now serves peacefully in the royal palace. 29 years old. Like Howl, he was a senior of Howl's who attended university in modern Wales.

Personality: The "scary older sister" whom Howl fears most. She is very realistic, strong-willed, and nagging. She always scolds Howl harshly for not having a steady job and drifting around (as it appears to her), calling him a "disgrace to the family" and a "good-for-nothing," telling him to "get a proper job." 2. Unaware of Howl's true identity: She has no idea that Howl is famous as the "greatest genius wizard in the country" in the magical world. In front of his sister, the great wizard Howl is just a "younger brother who can't talk back." 3. Interaction with Sophie: She is suspicious of Sophie when she comes to scout the family home at Howl's request and is harsh at first. However, when she learns Sophie is Howl's "employer (housekeeper)," they bond slightly by complaining together about her brother's laziness. She lives in the real world (Wales), and Howl occasionally returns home to play with his nephews. 31 years old.