Effective period / Period of releases: 1996 - 2023

Members: Makoto Kawabata, Haco, Tatsuya Yoshida, Mitsuru Tabata, Terukina Noriko, Atsushi Tsuyama, Yoshimitsu Ichiraku, Hajime Koizumi, Magic Aum Gigi, Hiroshi Higashi, Okano Futoshi, Shimura Koji, Ishida Yoko, Keizo Suhara, Uki Eiji, Father Moo, Hisashi Yasuda, Mano Kazuhiko, Ayano, Takahashi Atsuki, Nani Satoshima, Suzuki Chisen, Momo (30), Ryo Ozawa, Jyonson Tsu, Tomoko Kajino, S/T (2), Kitagawa Hao, Shozo Sawano

Japanese psychedelic rock band founded in 1995 by members of the Acid Mothers Temple soul-collective as a freak-out group for the 21st century, led by Kawabata Makoto.
According to acidmothers.com, U.F.O. is for "underground freak out".
Visual credits often go to Kawabata Sachiko / Sachiko Ichikawa / Elf (9).
Its lineup is ever-mutating.

Current members
Makoto Kawabata / Speed Guru – guitars, electronics, vocals (1995–present)
Hiroshi Higashi / Noodle God – synthesizer, vocals, harmonica (1998–present)
Nani Satoshima / Another Dimension – drums (2014–present)
Jyonson Tsu – guitar, bouzouki, vocals (2018–present)

Former members
Cotton Casino (Tomoko Kajino) / Beer & Cigarette – synthesizer, vocals (1995-2004), occasionally appearing as guest since 2012
Hajime Koizumi / Sleeping Monk (2) – drums (1995-2001, 2002, 2003-2005)
Takahashi Atsuki – drums (1995-1997)
Suzuki Chisen – vocals (1995-2000)
Ishida Yoko / Cheesecake – violin, performer, photography (1995-2001)
Mano Kazuhiko – saxophone (1995-2001)
Keizo Suhara – bass guitar (1995-1998)
Tatsuya Yoshida – drums (1997-1998, 2001)
Hisashi Yasuda – bass guitar (1998)
Ayano / Space Hi – Performer (1998)
Father Moo – Performer (1998, 2002)
Haco – Vocals (1998-1999, 2001)
Atsushi Tsuyama / Cosmic Joker – bass guitar, vocals (1998-2015)
Yoshimitsu Ichiraku – drums (2001-2002, 2009)
Audrey Ginestet – vocals, bass guitar, piano (2001)
Terukina Noriko – vibraphone, glockenspiel (2001)
Magic Aum Gigi – harp (2002)
Uki Eiji – drums (2002, 2005-2006)
Okano Futoshi – drums (2002-2003)
Ryoko Ono – saxophone, flute (2005-2006, 2007)
Nao (3) – vocals (2005-2006)
Kitagawa Hao – theremin, vocals (2006-2007)
Shimura Koji / Latino Cool – drums (2006-2014)
Mitsuru Tabata / Maratab / Mitsuko☆Tabata – guitar, vocals, guitar synthesizer (2012-2017)
S/T (2) a.k.a Wolf (83) / Space and Time – bass guitar (2016-2020 december)