The ensemble cast features a core group of actors playing martial arts students-turned-heroes in David Giuntoli (Grimm, A Million Little Things) as Bruce Wayne/Batman, Mark Dacascos (John Wick: Chapter 3 - Parabellum, Iron Chef America, Hawaii Five-0) as Richard Dragon, Kelly Hu (Arrow, X2: X-Men United) as Lady Shiva and Michael Jai White (Spawn, reprising his role from Arrow) as Ben Turner/Bronze Tiger. Their mentor O-Sensei is voiced by James Hong (Big Trouble in Little China, Blade Runner). Josh Keaton (Voltron: Legendary Defender; Green Lantern: The Animated Series) is featured as Jeffrey Burr, and additional voices are provided by veteran VO actors Grey Griffin, Chris Cox, Erica Luttrell, Robin Atkin Downes, Patrick Seitz, Jamie Chung and Eric Bauza.