Here's the thing, most people who are new into watching tokusatsu superhero shows think that it is basically live-action anime, which they are kinda right about it. In short, it is no surprise that some Super Sentai actors end up becoming voice actors or some voice actors end up in Super Sentai! And so, here is the list of Super Sentai actors that end up becoming voice actors and their prominent roles.
Naoya Uchida played Tatsuya Midorikawa/DenziGreen will later play Naruto Shippuden's Obito Uchiha (Tobi); Getter Robo's Hayato Jin and does some monster of the week voices for Super Sentai.
KihachirÅ Uemura played Dai/Green Flash will later play One Piece's Chaka.
Jouji Nakata played Sir Kaura from Choushisei Flashman and Volt's Great Professor Bias from Choujuu Sentai Liveman is best known to most anime fans as Hellsing's Alucard and Fate/stay night & Fate/Zero's Kirei Kotomine. He also did a lot of voice acting work for years now and you can check the full list of his work on Wikipedia and in various anime websites.
Reiko Chiba played Ptera Ranger, Mei is the voice of Samurai Showdown's Cham Cham and King of Fighters' Moe Habana.
Teruaki Ogawa played Ninja Red Sasuke and Black Knight Hyuuga is Ginga Densetsu Weed's Ken and Lector, Transformers: Beast Wars Neo's Mach Kick and Full Moon o Sagashite's Keiichi Wakaouji.
Hiroshi Tsuchida played Ninja Blue Saizou will end up playing Skullman in the Skullman anime adaptation, but for most Soul Calibur fans, he is best known as the voice of Zasalamel. In addition, he is the sort of official Japanese dub voice actor for Joseph Gordon-Levitt of The Dark Knight Rises and Inception fame.
Tamao Sato played Momo Maruo/OhPink was one of the voices of Athena Asamiya in The King of Fighters video game franchise.
Yuji Kishi played Kyosuke Jinai/Red Racer is best known by most fans as the official voice actor of Street Fighter franchise's Ken Masters, and voiced Yazoo in the Final Fantasy VII: Advent Children movie.
Masaya Matsukaze played Shun Namiki/Mega Blue did a lot of voice acting work and some of his work includes: Ouran High School Host Club's Kyoya Ootori, Hunter x Hunter (2011)'s Illumi Zoldyck, Rockman.EXE's Blues.EXE and Death Note's Teru Mikami.
Mami Higashiyama played Miku Imamura/Mega Pink is Shikabane Hime: Kuro's Hibiki Shijou, Earth Maiden Arjuna's Juna Ariyoshi/Arjuna and Wangan Midnight's Mika Murakami.
Yuko Miyamura played Kyoko Hayase/Sieg Jeanne from Kyukyu Sentai GoGo-V is best known to most anime fans as the voice of Neon Genesis Evangelion's Asuka Langley Soryu. She is also the voice of Chun-Li in the Street Fighter video game franchise.
Takeru Shibaki played Kai Samezu/GaoBlue is Ull/Ulf in the Grandia 3 video game.
Nao Nagasawa played Nanami Nono/Hurricane Blue is Lilly in Sockie's Frontier Quest anime.
Ayumi Kinoshita played Marika "Jasmine" Reimon/DekaYellow is Aki Izayoi in Yu-Gi-Oh! 5D's.
Mika Kikuchi played Koume "Umeko" Kodou/DekaPink is Mokona Modoki in xxxHolic and Tsubasa Chornicle and she also played Mai Otome's Arika Yumemiya.
Tsutomu Isobe is already a voice actor before he played Isamu Ozu/Wolzard/Wolzard Fire from Mahou Sentai Magiranger as he is the official Japanese dub voice actor of Harrison Ford and Mel Gibson. In addition, some of his prominent anime roles include Black Lagoon's Dutch, Monster's Heinrich Lunge and Mobile Suit Gundam 00 The Movie: A Wakening of the Trailblazer's Aeolia Schenberg.
Chise Nakamura played Natsuki Mamiya/BoukenYellow is Dragonaut: The Resonance's Megumi Jinguuji and Corpse Princess' Itsuki Yamagami.
Yuka Hirata played Mele from Juuken Sentai Gekiranger is Shikabane Hime: Aka & Shikabane Hime: Kuro Special's Minai Ruo and Hajime no Ippo: New Challenger's Kumi Mashiba.
Kazue Itoh played Juuken Sentai Gekiranger's Miki Masaki is Rurouni Kenshin's Shura.
Hidenori Tokuyama played Hiroto Suto/Go-On Gold is Gensomaden Saiyuki's Tongpu.
Yumi Sugimoto played Miu Suto/Go-On Silver is Kuuchuu Buranko's Mayumi.
Tori Matsuzaka played Takeru Shiba/ShinkenRed is .hack//The Movie's Kakeru Tanaka.
Hiroki Aiba played Ryunosuke Ikenami/ShinkenBlue is Majestic Prince's Izuru Hitachi and New Prince of Tennis's Irie Kanata.
Louis Yamada LIII played Professor Shuichiro Amachi from Tensou Sentai Goseiger is Tentai Senshi Sunred's Vamp.
Mao Ichimichi played Luka Milfy/GokaiYellow is DD Hokuto no Ken's Lin and Cookin' Idol Ai! Mai! Main!'s Kirakira.
Junya Ikeda played Gai Ikari/GokaiSilver is Majestic Prince's Ataru Suruga.
The list is made thanks to Wikipedia, MyAnimeList and Anime News Network with a little help from Google.