Hero 6 Japanese Dub - Big

Beyond Baymax: Why the "Big Hero 6 Japanese Dub" is a Masterclass in Localization

The Japanese dubbed version of Big Hero 6 is titled Baymax (ベイマックス)

Baymax’s speech style:

In English, Baymax speaks matter-of-factly. In Japanese, Takuya Kimura used a very polite, desu/masu form with soft pauses, making him sound like a caring but slightly clumsy grandfather or doctor. His "Hai, irasshaimase" (Yes, welcome) when scanning Hiro became iconic. big hero 6 japanese dub

• Hiro Hamada (Ryosuke Yamada): The lead role went to Ryosuke Yamada, a member of the pop idol group Hey! Say! JUMP. Yamada brings a gruffer, more realistically teenage angst to Hiro compared to Ryan Potter’s softer English delivery. His screams during action sequences carry a genuine shonen anime flavor.
• Baymax (Tatsuhisa Suzuki): This is the biggest departure. In English, Scott Adsit played Baymax with a deadpan, almost neurotic monotone. In Japanese, Tatsuhisa Suzuki (famous for Akame ga Kill! and JoJo's Bizarre Adventure) gives Baymax a slightly deeper, warmer, and more paternal timbre. While still robotic, the Japanese Baymax sounds less like a medical device and more like a gentle otōto (older brother figure).
• GoGo Tomago (Ayumi Ito): Ayumi Ito (famous for voicing Aerith in Final Fantasy VII) steps away from sweet roles to deliver a perfectly snarky, tough-as-nails GoGo. Her rapid-fire slang is localized excellently for a Japanese audience.
• Professor Callaghan (Masane Tsukayama): Tsukayama is a legend in the industry (Raiden in Metal Gear Solid). His turn as the villain adds a layer of Shakespearean tragedy. In English, Callaghan is brittle and cold; in Japanese, he sounds legitimately broken and terrifying.