Characters appearing in ''Manga/TanteiGakuenQ''. A Work In Progress, any additions are greatly welcomed.

!Kyuu Renjou
->Voiced by: Creator/MegumiOgata

* {{Adorkable}}
* DisappearedDad: He died when Kyuu was around five years old. [[spoiler:He was TheLancer to Morihiko Dan and died in the same incident that rendered Dan crippled.]]
* TheHero
* LoveableSexManiac: Kyu seems to be a bit obsessed with girl's panties. Especially Megu's or Yukihira's.
* NiceGuy: A pervert he may be, but Kyuu is one of the sweetest characters in the series.
* ShipTease: With Megu.

!Ryu Amakusa
->Voiced by: Creator/KoichiTochika

* BecomingTheMask: [[spoiler: He was supposed to be TheMole of the Meiousei group, as the grandson and spy of the BigBad. However, his friendship with Class Q made him think twice.]]
* ChickMagnet: Older women, young girls and ''little girls blush'' at the sight of him.
* TheLancer
* ShowerShy: In the HotSpringsEpisode, Ryu arrives to the male side of the springs with a towel. Kintarou thinks this isn't manly enough and tries to force it off him. HilarityEnsues.
* SugarAndIcePersonality: He's very cool-looking and almost unhumanly cold at first, but then he begins to show a much warmer side to him.

!Kintaro Touyama
->Voiced by: Creator/HideoIshikawa

* BadassNormal: Not a genius like the others, but he makes up for it with his SuperStrength and utter loyalty.
* TheBigGuy
* LovableSexManiac
* EyesAlwaysShut
* WellDoneSonGuy: His father is a highranked police officer, and Kintarou is rather conflicted about this.

!Kazuma Narusawa
->Voiced by: Creator/TomokoKawakami

* AdorablyPrecociousChild: The youngest of the group, and it ''shows''.
* DirtyKid: ... Exactly ''how'' did he get such an exact hold of Megu's boob size?
* {{Megane}}
* NiceHat
* TheSmartGuy

!Megumi Minami
->Voiced by: Creator/HoukoKuwashima

* TheChick
* CosplayOtakuGirl: In the live action version, she shows up un several different outfits.
* GirlishPigtails
* InSeriesNickname: Called "Megu" by her friends.
* PhotographicMemory: Her biggest "gift".
* PluckyGirl: Very strongwilled and always ready to help.
* ShipTease: With Kyu.
* {{Tsundere}}: Type B. She's a fairly sweet girl until Kyuu comments on her panties or flirts with other girls.

!Dan Morihiko
->Voiced by: Creator/HideyukiTanaka

* BigGood
* HandicappedBadass: Is still a deadly shot, despite being in a wheelchair.
* TeamDad