Quick answer — Reina Kondou voices Nikaido in Dorohedoro, Nagomi Wahira in Akiba Maid War, Yui Yamazato in Those Snow White Notes and 33 more characters.
Reina Kondou voices Nikaido (Dorohedoro), Nagomi Wahira (Akiba Maid War), Yui Yamazato (Those Snow White Notes), Hana Ichinose (Slow Start), Nina Maehara (Dropout Idol Fruit Tart), Ryou Shinonome (Cinderella Nine), Suzuka Nagami (My Sister, My Writer), Hina (Girls Band Cry) and 28 more.
Nikaido is voiced in Japanese by Reina Kondou.