Kenichiro Thomson

Kenichiro Thomson’s Breakthrough in the World of Video Game Voice Acting

Landing the lead role in a major game revival as your gaming debut is not a common starting point. For Kenichiro Thomson, that is exactly how his video game career began – cast by Capcom as Miyamoto Musashi, the central protagonist of Onimusha: Way of the Sword, a title that marks the return of one of action gaming’s most storied franchises. His casting was confirmed through official Onimusha channels in February 2025, announced alongside the reveal that legendary Japanese screen icon Toshiro Mifune would serve as the face model for the character. The pairing of Mifune’s likeness with Thomson’s voice was a deliberate creative choice on Capcom’s part – a composite identity built to carry the weight of a single-protagonist action title across a roughly twenty-hour English-language campaign.

The scope of that brief cannot be understated. Musashi’s English performance had to feel coherent with a face carrying decades of samurai cinema association, without tipping into imitation. Thomson’s dual cultural background and fluency in Japanese made him a natural fit for a role demanding historical authenticity in its register, not just clarity of delivery.

From London Stages to Television Screens

Before stepping into the recording booth for Capcom, Thomson built his craft across theatre and screen. His stage work covers productions at Teatro Technis, Rosemary Branch Theatre – including Butterfly Powder and Rabbit – and Flare Path at Barons Court Theatre, a run of credits that reflects consistent work in London’s mid-scale theatrical circuit. That stage grounding in physical and vocal control feeds directly into the kind of presence his screen roles demand.

On television, the most sustained chapter of his career to date is Martin in Netflix’s The Diplomat, a political drama in which he appeared as a series regular across all three seasons, accumulating thirteen credited episodes between 2023 and 2025. Earlier screen credits include a role in Sky’s historical drama Britannia and an appearance in Flack. The Diplomat in particular placed him in a high-profile ensemble alongside a cast drawn from across British and American television, giving his work international visibility well ahead of his gaming debut.

A Multilingual Performer with Commercial Range

Thomson speaks English, Spanish, and Japanese fluently, with working German – a profile that positions him for a specific kind of work: projects that require cultural and linguistic authenticity rather than generalist voiceover. His commercial credits bear that out, spanning Google Pixel, Audi, Spotify, British Heart Foundation, and WhatsApp. His audiobook work extends into Japanese-language literary fiction, with recordings including In the Miso Soup by Ryu Murakami performed in Japanese, alongside English-language narrations of Inspector Imanishi Investigates and The Samurai Detectives – a catalogue that mirrors the dual-register demands of his acting career more broadly.

Represented for voice work by Loud and Clear Voices in London, Thomson sits in a relatively rare position among British performers: a bilingual actor whose on-screen credits, stage history, and gaming debut all point toward culturally specific material rather than broad genre work. Onimusha: Way of the Sword, released in 2026, marks the point where those threads converged into one of the year’s most prominent voice casting announcements.