Cast members for both arcs of Danganronpa 3: The End of Kibougamine Gakuen were announced. The role of Monokuma has been changed from Nobuyo Ooyama (Doraemon) to Tarako (Chibi Maruko-chan). The new voice for Monokuma will start during Danganronpa Stage, and then later her voice will also be used for the new anime and game. It was also announced that Zetsubou-hen (visual shown) will air during the same season as Mirai-hen, which will broadcast in Summer 2016.

Mirai-hen
Makoto Naegi: Megumi Ogata (Neon Genesis Evangelion)
Kyouko Kirigiri: Yoko Hikasa (K-On!)
Seiko Kimura: Saki Fujita (Working!!)
Ruruka Andou: Inori Minase (Gochuumon wa Usagi Desu ka?)
Sounosuke Izayoi: Takuya Eguchi (Ore Monogatari!!)
Kazuo Tengen: Hidekazu Shibata (Ginga Eiyuu Densetsu)
Kouichi Kizakura: Keiji Fujiwara (Crayon Shin-chan)
Ryouta Mitarai: Kanata Hongo (Btooom!)
Daisaku Bandai: Rie Kugimiya (Toradora!)
Great Gozu: Kenta Miyake (Boku no Hero Academia)
Aoi Asahina: Chiwa Saito (Akatsuki no Yona)
Yasuhiro Hagakure: Masaya Matsukaze (Hunter x Hunter (2011))
Monomi: Takako Sasuga (Sazae-san)
Kyousuke Murakata: Toshiyuki Morikawa (Bleach)
Chisa Yukizoe: Mai Nakahara (Clannad)
Juuzou Sakakura: Junichi Suwabe (Kuroko no Basket)
Miaya Gekkougahara: TBA

Zetsubou-hen
Nagito Komaeda: Megumi Ogata
Kazuichi Souda: Yoshimasa Hosoya (Hai to Gensou no Grimgar)
Ibuki Mioda: Ami Koshimizu (Code Geass: Hangyaku no Lelouch)
Mikan Tsumiki: Ai Kayano (No Game No Life)
Hiyoko Saionji: Suzuko Mimori (Kamisama Hajimemashita)
Mahiru Koizumi: Yuu Kobayashi (Shingeki no Kyojin)
Teruteru Hanamura: Jun Fukuyama (Ansatsu Kyoushitsu (TV))
Akane Owari: Romi Park (Fullmetal Alchemist: Brotherhood)
Nekomaru Nidai: Hiroki Yasumoto (Yowamushi Pedal)
Fuyuhiko Kuzuryuu: Daisuke Kishio (Fairy Tail)
Peko Pekoyama: Kotono Mitsushi (Bishoujo Senshi Sailor Moon)
Ryouta Mitarai: Kanata Hongo
Tanaka the Forbidden: Tomokazu Sugita (Gintama)
Sonia Nevermind: Miho Arakawa (Mawaru Penguindrum)
Hajime Hinata: Minami Takayama (Detective Conan)

Monokuma Cast Change Message Video


Source: Official site