
Quick answer — Daisuke Motohashi voices Riko in Maquia: When the Promised Flower Blooms, Gwemp in Alderamin on the Sky, Kuro in BNA and 1 more characters.
Daisuke Motohashi voices Riko (Maquia: When the Promised Flower Blooms), Gwemp (Alderamin on the Sky), Kuro (BNA), Masaru Kusakabe (BNA).
Riko is voiced in Japanese by Daisuke Motohashi.