* ActorAllusion: Azusa has one in the anime, though not to [[Creator/ChiakiTakahashi her seiyuu's]] previous roles but her previous job as a gravure idol. Azusa was asked to do a gravure idol audition and was asked to pose. Cue MaleGaze. On boobs.
** Also in the anime, Haruka smacked herself in the face with a box lid on national TV. Her seiyuu had done the [[http://www.youtube.com/watch?v=qDvD6TDbOho exact same thing]] on a television show several years ago.
** Iori will sometimes cry out "Urusai urusai urusai!" [[labelnote:translation]]"Shut up, shut up, shut up!"[[/labelnote]] That's Shana from ShakuganNoShana's catchphrase, which is commonly quoted by other characters of [[ShanaClone the same general archetype]]. ''Especially'' if they [[RieKugimiya share the same voice actor]] - which in this case they do.
* DuelingShows: The anime aired on the same season with... VisualNovel/UtaNoPrinceSama. Moreover:
** The protagonist of [=UtaPri=] is named Haruka '''''Nana'''''mi. The girl considered as the main character of [=iM@S=] is named Haruka '''''Ama'''''mi.
** Both shows feature twins, although Shou's twin brother Kaoru does not appear in the anime.
** Tokiya and Chihaya are quite alike in demeanor and looks.
** Both shows are centered on music and showbiz, with [=iM@S=] on the more realistic side of the scale compared to the loftier fantastical [=UtaPri=] side of the scale.
* HeyItsThatVoice
** [[Creator/AsamiImai Chihaya]] - [[VideoGame/BlazBlue Tsubaki Yayoi]], and [[SteinsGate Makise Kurisu]]
** Haruka - [[OniichanNoKotoNankaZenzenSukiJaNaiNDakaraNe as another Haruka]] and [[TheDitz Nakatasugawa]] [[HoshizoraEKakaruHashi Ui]]
** [[Creator/AsamiShimoda Ami/Mami]] - [[{{Vocaloid}} Rin & Len Kagamine]], [[BGataHKei Yamada Chika]] and [[KyouNoGoNoNi Koizumi Chika]]
** Yukiho - [[MahouSenseiNegima Akira]]. If we go by her [[Creator/YurikaOchiai previous voice]], it's [[VideoGame/DisgaeaHourOfDarkness Thursday the Robot]]
** [[Creator/ChiakiTakahashi Azusa]] - [[VideoGame/BlazBlue Litchi Faye-Ling]], [[OtomeWaBokuNiKoishiteru Takako]] and [[VisualNovel/SchoolDays Nanami]]
** [[RieKugimiya Iori]] - [[VideoGame/{{Persona 4}} Rise Kujikawa]], [[Anime/{{Mobile Suit Gundam 00}} Nena Trinity]], [[{{Manga/Gintama}} Kagura]] and lots and lots of ShanaClone. [[PigeonholedVoiceActor Need we say more?]]
** [[HiromiHirata Makoto]] - [[VideoGame/ArcanaHeart Kamui Tokinomiya]], [[VideoGame/Disgaea3AbsenceOfJustice Mao]]
** [[Creator/ManamiNumakura Hibiki]] - [[Anime/BlackRockShooter Arata]], [[HanamaruKindergarten Kenji]], [[Anime/{{Zoobles}} Panky]]
** Yayoi - [[VideoGame/ArcanaHeart Lilica Felchenrow]], hyperactive as ever.
** [[Creator/AkikoHasegawa Miki]] - The Japanese voice of [[FireEmblemTellius Mia/Wayu]].
** [[JuriTakita Kotori]] - [[VideoGame/ArcanaHeart Mei-Fang]] and the Japanese voice of [[FireEmblemTellius Elincia]].
** [[TakumaTerashima Touma]] - [[GenesisOfAquarion Apollo]], [[VideoGame/SuperRobotWarsOriginalGeneration Kouta Azuma]], [[MobileSuitGundamAGE (adult) Desil Galette]]... OhCrap
** Hokuto - [[TokimekiMemorialGirlsSide2 Chris Weatherfield]]
* TheOtherDarrin: From ''iM@S2'' onward, Yukiho's original seiyuu, Creator/YurikaOchiai, was replaced by Azumi Asakura.
* PortmanteauSeriesNickname: [=iM@S=].
* RelationshipVoiceActor: In the Puchimas anime, LightNovel/ToraDora stars JunjiMajima and RieKugimiya voice The Producer and Iori, respectfully. However, this is the first time Junji has voiced someone in the franchise, while Rie has voiced her character since its inception.
** Rikka Takanashi, Shinka Nibutani, Kumin Tsuyuri, and Sanae Dekomori from [[LightNovel/ChuunibyouDemoKoiGaShitai Chuunibyou]] share voice actresses Creator/MaayaUchida, Chinatsu Akasaki, AzumiAsakura, and SumireUesaka, respectively, with Ranko Kanzaki, Akane Hino, Yukiho Hagiwara, and Anastasia.
* [[TalkingToHimself Talking To Herself]] - Ami and Mami are both voiced by Creator/AsamiShimoda.