The third promotional video for the upcoming anime One Punch Man revealed new cast members, staff members, and theme songs. The video also announced that the anime will premiere on October 5.

Cast
Atomic Samurai: Kenjirou Tsuda (Gangsta.)
Bofoy: Tessyo Genda (Mobile Suit Gundam: The 08th MS Team)
Child Emperor: Minami Takayama (Berserk)
Engine Knight: Youji Ueda (JoJo no Kimyou na Bouken (2012))
Huff-Puff Prisoner: Masaya Onosaka (Baccano!)
Lightspeed Flash: Kousuke Toriumi (Hakuouki)
Metal Bat: Wataru Hatano (Papa no Iukoto wo Kikinasai!)
Pig God: Daisuke Namikawa (Arslan Senki (TV))
Superalloy Darkshine: Satoshi Hino (Bakuman.)
Watchdog: Yuji Ueda (Detroit Metal City)

Staff
Character Design, Chief Animation Director: Chikashi Kubota (Shinsekai Yori)
Art Director: Shigemi Ikeda (Overlord), Yukiko Maruyama (Mobile Suit Gundam: The Origin)
Color Design: Satoshi Hashimoto (Death Note)
Director of Photography: Akane Fushihara (Kiseijuu: Sei no Kakuritsu)
Editing: Kashiko Kimura (Ore Monogatari!!)
Sound Director: Shouji Hata (Fairy Tail)
Music: Makoto Miyazaki (Dragon Crisis!)

Opening Theme Song: "THE HERO !! ~Okoreru Kobushi ni Hi wo Tsukero~" by JAM Project
Ending Theme Song: "Hoshi yori Saki ni Mitsukete Ageru" by Hiroko Moriguchi

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One Punch-Man is a manga written by One and illustrated by Yusuke Murata. It was originally a webcomic published on One's own website in 2009. The series has been serialized in the web magazine Tonari no Young Jump since 2012 and was announced to receive an anime adaptation in March 2015. There are currently nine manga volumes in print.

Source: Promotional video