Adult Swim has announced the English dub cast members for the FLCL Progressive and FLCL Alternative sequels. Each of series are scheduled to air on the Toonami programming block with Progressive to begin its broadcast on June 2 at 11:30 p.m., while Alternative will broadcast in September.

Cast for Progressive
Haruko Haruhara: Kari Wahlgren
Jinyu: Allegra Clark
Hidomi Unjakurou: Xanthe Huynh
Yoshimi Ide: Robbie Daymond
Gorou Mori: Jon Allen
Nogata Maruko: Yuri Lowenthal
Aiko: Christine Marie Cabanos
Hinae Unjakurou: Julie Ann Taylor
Masurao: Jason Griffith
Eye Patch: David Brimmer
Tonkichi: Steve Kramer

Cast for Alternative
Kana Koumoto: Megan Harvey
Tomomi Nabeta (Pets): Marieve Herington
Sei Yajima (Hijiri): Erica Lindbeck
Mitsuru Motoyama (Mossan): Marianne Miller
Kan Sudou: Patrick Seitz
Kado Sasaki: Max Mittelman
Satoru Aida: Ben Pronsky
Bunta Koumoto: Erick Abbate
Youga Dennis: Steven Blum
Maki Kitaki: Erica Schroeder
Kouta Kanda: Ray Chase

FLCL is an original anime created by Kazuya Tsurumaki (Neon Genesis Evangelion) that was produced at Gainax and Production I.G. The series was released on six separate DVD volumes between April 2000 and March 2001. Funimation licensed the anime for North American release in 2010 and shipped the DVD & Blu-ray in 2011.

Source: Official Twitter 1, 2