Supporting Characters

Please view this spreadsheet for minor pets and family relations.

Pets= {{#tag:tabber {{SupportingCharInfo }}
 * Beit =
 * name_en=Jupiter
 * name_jp=
 * image=
 * relationships=Kyoji Takajo

Jupiter
Kyoji Takajo's pet dog.
 * -|Sai =

Chachata
Kuro Kiyosumi's pet goldfish that was won in a festival.
 * -|FRAME =

John

 * -|Shinsoku Ikkon =

Nyako
Suzaku Akai's pet cat, who he is almost never seen without. Like Nyako, it's voiced by Masuyama Takeaki in songs and stories. Its real name is Nyankii.

Nyako dislikes Genbu Kurono due to Genbu having a cat allergy, but they get along through their mutual respect of Suzaku. It appears to be able to communicate with Suzaku. Despite being a cat, it is very performative and shows itself off with unusually self-aware poses; Suzaku says its reason for becoming an idol is to find its estranged family members, so it presents itself to society in order to be seen.
 * -|Café Parade =

Bubu
A mini pig that was found by Saki Mizushima under a bridge near Café Parade. Currently owned by Makio Uzuki.
 * -|THE Kogadou=

Champ/Overlord
A cat that both Takeru Taiga and Ren Kizaki take care of, though they refer to it by two different names. }}

Family= {{#tag:tabber {{SupportingCharInfo }}
 * Jupiter=
 * name_en=?
 * name_jp=?
 * image=【Remembrance Shot】Shouta Mitarai.jpg
 * relationships=Shouta Mitarai (Brother)

Shouta's Sisters
Shouta Mitarai's three older sisters. They signed him up to be an idol at 876 Productions so that they would have a chance to meet Hokuto through him.

Appearances

 * Card: 【Candid Shot】Shouta Mitarai
 * Card: 【Remembrance Shot】Shouta Mitarai


 * -|DRAMATIC STARS=

Kaoru's Sister

 * -|Beit=

Hotaru and Kyoichi
Kyoji Takajo's brothers. Kyoichi is older, while Hotaru is younger. Although Kyoji has a strained relationship with his older brother, he's quite fond of Hotaru and thinks of him kindly.

Appearances

 * Event scenes: Kaga Brilliant Song Festival (Mentioned)
 * Magazine: A New World, Ch. 2 (Mentioned)
 * Magazine: 呪縛からの逃亡, Ch. 2

Pierre's Brothers
Pierre's brothers. He has an older and a younger one. Their surname is Bichelberger.

Due to their father being ill, the older brother is currently fighting for the country's throne.

Appearances

 * Side Memories: Pierre
 * Magazine: Sad Feelings, Ch. 1

Minori's Uncle
Minori Watanabe's uncle, who adopted him after both of Minori's parents died. He died admist a gang war between Minori's gang and another group.

After his death, Minori found out that his uncle had a passion for idols, leading to his own interest in them.

Appearances

 * Magazine: Flowers That Scatter In A Rampage, Ch. 1 (Mentioned)
 * Magazine: Flowers That Scatter In A Rampage, Ch. 2 (Mentioned)


 * -|FRAME=

Amane
Seiji Shingen's niece, who he loves dearly and is fiercely protective of. She has a crush on Ryu Kimura, wanting to marry him much to Seiji's dismay and anger (towards Ryu only).

When Seiji first became an idol, there were tabloid rumors that Amane was his illegitimate daughter, but it was soon cleared up with the rest of FRAME that she was his niece.

Appearances

 * Magazine: Papa is an Idol!, Ch. 1
 * Magazine: Papa is an Idol!, Ch. 2
 * Magazine: Be Charming Like a Man! (Mentioned)
 * Magazine: Playing is Serious Too (Mentioned)
 * Magazine: The Pink Scarf (Mentioned)
 * Magazine: Mission Valentine
 * Magazine: Is This Right? (Mentioned)
 * Magazine: This is a Professional
 * Magazine: 姪と探偵
 * Magazine: 離れていても思い出す


 * -|Shinsoku Ikkon=

Suzaku's Parents
Suzaku Akai's parents. Both are professional wrestlers who want Suzaku to become a pro wrestler as well, despite Suzaku wishing to stay with Genbu and Shinsoku Ikkon forever. Because they both work, Suzaku was often left around other adults when he was younger.

Appearances

 * Event scenes: 4th Anniversary Live ~Fists of Faith~ (Mentioned)
 * Side Memories: Suzaku Akai (Mentioned)
 * Magazine: My Morning Ain't Half-Hearted!, Ch. 2 (Mentioned)
 * Drama track: ST@RTING LINE-09 Drama part 1 ~Shinsoku Ikkon~ (Mentioned)


 * -|Altessimo=

Kei's Parents
Kei Tsuzuki's parents. They divorced when he was young, with his German mother taking him to live in Berlin. At some point, Kei became separated from his mother. His father married another woman.

Appearances

 * Event scenes: Dazzling Asakusa Music Festival (Mentioned)
 * Side Memories: Kei Tsuzuki (Mentioned)
 * Magazine: A Precious Time (Mentioned)


 * -|F-LAGS=

Ritsuko Akizuki
Ryo Akizuki's cousin who is an idol at 765 Productions. She is a smart and hardworking idol who formerly worked as an intern at the agency before debuting herself.

During the events of Dearly Stars, she introduced him to 876 Productions, where he worked as a female idol. She also introduced him to Makoto Kikuchi, another 765 Productions idol who became Ryo's friend.

Appearances

 * Magazine: Rule-Defying Debut?!, Ch. 2
 * Magazine: A Flavor to Be Proud Of (Mentioned)


 * -|Legenders=

Amehiko's Aunt
Amehiko Kuzunoha's aunt. Like Amehiko, she posseses a spiritual power, but even stronger as she is a woman of the clan. A mysterious lady who is occasionally seen watching over her nephew.

Appearances
}}
 * Magazine: The Cleaning Industry, Ch. 2
 * Magazine: Checkmate! Leader of the Board event manga
 * Magazine: ART COLLECTION LIVE event manga
 * Magazine: ｢仕事｣の話だ

Other=

{{#tag:tabber {{SupportingCharInfo }}
 * Jupiter=
 * name_en=Shinokawa
 * name_jp=篠川
 * image=Mag-touma-28-09.png
 * relationships=Jupiter

Shinokawa
A photographer who first appeared in the manga Jupiter ~THE IDOLM@STER~. He has since appeared various times in Jupiter's workplaces.

Appearances

 * Magazine: The Sun of You
 * Magazine: 山梨で再会だぜっ!

Takao Kuroi
The president of 961 Productions, whom Jupiter formerly worked for during the events of THE iDOLM@STER 2. Jupiter left his agency after Touma found out that he was using illicit methods to push the unit's popularity.

Appearances

 * Event scenes: Signlight Illumination (Mentioned)
 * Event scenes: Detective Aaron Case Files ~The Truth the Chess Pieces Reveal~ (Mentioned)
 * Magazine: Aim to be Top Idol, Ch. 1
 * Magazine: Aim to be Top Idol, Ch. 2


 * -|Sai=

Ichikawa Hakutsuru
A kabuki actor who is a heir to a famous kabuki school.

Appearances

 * Event scenes: 6th Anniversary Live ~Sedulous Steps Forward~
 * Side Memories: Shoma Hanamura


 * -|FRAME=

Seiji's Friend
Seiji Shingen's former friend who was in the Japan Self-Defence Forces with him. He died in the middle of a terrorist attack while protecting a child. Seiji wears his dogtag as a sign of respect, and has fond memories of making curry with him. Their curry contained chocolate, giving it its unique flavor.

Appearances

 * Event scenes: Kitchen Idol! Which Curry SHOW (Mentioned)
 * Magazine: I Don't Want to Lose Twice, Ch. 2
 * Magazine: A Curry Made with Memories


 * -|Shinsoku Ikkon=

Little bros
The delinquent underlings of Genbu Kurono, who attend Ouken high with him and Suzaku. They all highly respect Shinsoku Ikkon, even going to their performances.

The blonde student is referred to as Hero Loving Student in Suzaku's Side Memories.

Appearances

 * Event scenes: Job★Challenge ~For Some Reason, we are Police Men! Soccer Players! Pilots!~ (Mentioned)
 * Event scenes: Booming Loud Roar! Crimson Live
 * Side Memories: Suzaku Akai
 * Magazine: 応えてこそ本物
 * Magazine: かみ合わない会話
 * Magazine: After Demons, It’s the Unbelievable...
 * Card: 【Candid Shot】Genbu Kurono
 * Card: 【The Smart Sort of Chief】

Taro Yamashita
The son of Kyoto's mayor. During middle school, Genbu Kurono scored higher than him in the final exam, so he had Genbu expelled and forced him to leave Kyoto. Later on, he encountered Genbu again in Yokohoma.

Appearances

 * Event scenes: Three Kingdoms Chronicles ~The Strategists of Superior Beauty~
 * Magazine: If It's Possible, Then Try. I Won't Lose, Ch. 2


 * -|Altessimo=

Angel
Kei Tsuzuki's former friend who he met in Berlin as a child. The so-called Angel was a musician who performed in a hall near Kei's home; this was where they met, sparking a friendship that would heighten Kei's interest in music. One day, the angel suddenly left Berlin as they had supposedly gained a successful music career.

Appearances

 * Event scenes: School of Chorus (Mentioned)
 * Side Memories: Kei Tsuzuki (Mentioned)

Legendary Songstress
A singer who Kei Tsuzuki once composed a song for. For unknown reasons, she retired suddenly. The purple coat that Kei wears belonged to a female friend of his, likely being the Legendary Songstress.


 * -|F-LAGS=

Ai Hidaka and Eri Mizutani
Ryo Akizuki's former unitmate from when he was in 876 Productions during the events of Dearly Stars. Ai is a passionate and loud girl whose mother was once the country's top idol. Eri is a shy, quiet girl who became an idol after gaining fame online as her net persona.

Appearances

 * Event scenes: Smiles After the Rain (Mentioned)
 * Magazine: Head Towards the Future and Spread Your Wings! (Mentioned)
 * Magazine: A Flavor to Be Proud Of (Mentioned)
 * Magazine: Soaring Towards the Future! (Mentioned)
 * Card: 【Candid Shot】Ryo Akizuki


 * -|Various=

Ochiai
A policeman who works at a police station near Ouken High. He formerly worked with Hideo Akuno while the latter was a police officer. Shinsoku Ikkon, who know him from frequently walking by the station after school, refer to him as 'old man'.

Appearances
}}
 * Event scenes: Job★Challenge ~For Some Reason, we are Police Men! Soccer Players! Pilots!~