- Watarirouka Hashiritai
- Affectionate Nickname: Lovetan
- Image Song: 'Heso ga magaru', her solo song from the Watarirouka Hashiritai single 'Shonen yo Uso o Tsuke!'
- New Transfer Student: She was originally a member of AKB's Team B.
- Odango Hair: Although she's been growing out of them lately, seemingly favoring a Tomboyish Ponytail.
- Otaku Surrogate: She's a member of the unofficial sub-unit Ota4.
Imada MinaBorn on March 5, 1997 in Fukuoka Prefecture
- Affectionate Nickname: Mina
Ito RairaBorn on October 31, 1998 in Ehime Prefecture
- Affectionate Nickname: Raira
Iwahana ShinoBorn on April 1, 2000 in Fukuoka Prefecture
- Affectionate Nickname: Shino
Ueki NaoBorn on August 12, 1997 in Fukuoka Prefecture
Okada KannaBorn on June 26, 1997 in Fukuoka Prefecture
- Affectionate Nickname: Okapan
Kusaba ManamiBorn on October 17, 1995 in Fukuoka Prefecture
- Affectionate Nickname: Manamin
Kumazawa SerinaBorn on April 17, 1997 in Fukuoka Prefecture
- Affectionate Nickname: Seriinu
Goto IzumiBorn on September 27, 1997 in Fukuoka Prefecture
- Affectionate Nickname: Iichan
Shimono YukiBorn on April 2, 1998 in Fukuoka Prefecture
- Affectionate Nickname: Shinamon/Cinnamon
Tanaka YukaBorn on June 7, 2000 in Fukuoka Prefecture
- Affectionate Nickname: Yuutan
Tomiyoshi AsukaBorn on September 20, 1997 in Miyazaki
- Affectionate Nickname: Asuka
Tomonaga MioBorn on May 17, 1998 in Fukuoka Prefecture.Holds a concurrent position with AKBís Team B.Sub-unit(s) shes been in are:
- Tentoumu Chu!
- Affectionate Nickname: Mio, Miotashu
- Ascended Extra: One of only a few fresh Kenkyuusei that has ranked in the Sousenkyo. She ranked 59th during the 5th one. She was also featured in AKB's "Sayonara Crawl" and was chosen as part of the double center with Meru in "Melon Juice".
- New Transfer Student: Concurrent to AKB's Team B.
Fukagawa MaikoBorn on July 5, 1999 in Fukuoka Prefecture
- Affectionate Nickname: Maikomu, Maiko
Fuchigami MaiBorn on September 21, 1996 in Fukuoka Prefecture
- Affectionate Nickname: Maichan
Miyawaki SakuraBorn on March 19, 1998 in Kagoshima Prefecture.Holds a concurrent position in AKBís Team A.She was named co-captain of Team KIV in the 2014 shuffle.
- Affectionate Nickname: Sakura
- Ascended Extra: Has been shown in "UZA" and "Sayonara Crawl" and is the only original member that has ranked in the 4th and 5th Sousenkyo since HKT's creation. She also is frequently promoted as HKT's face and holds the main character position in Majisuka Gakuen 4 and 5.
- New Transfer Student: Concurrent to AKB's Team A.
Murashige AnnaBorn on July 29, 1998 in Yamaguchi Prefecture.Held a concurrent position with NMBís Team N from 2014 to 2015.
- Affectionate Nickname: Aanya
- But Not Too Foreign: She is half Russian.
- Bilingual Bonus: She is fluent in Russian as well.
- Cannot Tell a Joke: Whenever she attempts something funny, no one laughs. She was also branded as the 2nd generation "Suberi (Fail) Queen" by Takahashi Minami herself on AKBINGO.
- Does Not Like Bugs
- New Transfer Student: Concurrent to NMB
- The Prankster
- Seiyuu: Voiced the minor character Alyona in Episode 9 of AKB48's official anime, AKB0048. She fully busts out her Russian there.
Motomura AoiBorn on May 31, 1997 in Fukuoka Prefecture
- Affectionate Nickname: Aoi
- Shrinking Violet: Notably has a rather shy personality and is dubbed to be a crybaby. She's burst into tears several times on one of HKT's variety shows, Hakata Hyakkaten.
Moriyasu MadokaBorn on July 26, 1997 in Nagasaki Prefecture
- Affectionate Nickname: Madoka
- The Cast Showoff: She played the piano intro to "Ponytail to Shushu" at the third day of AKB's 2013 Tokyo Dome concert.