Three English voice actors are named on the official reveal: Jovan Adepo as Simon, Kezia Burrows as Zoe and Terry O’Quinn as Richard. No first-party page names a separate Japanese cast, though an aggregator lists more names.
SILENT HILL: Townfall | Cast Reveal Trailer (4K: EN/PEGI) | KONAMI Official video on the SILENT HILL (Official) YouTube channel.
The Cast Reveal Trailer from the Silent Hill channel. Its description carries the full list of the main English roles, and Steam posted the same list with it. Posted in Steam announcements (ISteamNews API)
Who plays whom
A man in a knit hat and glasses in pale fog. Screenshot from the game's Steam store page. Owned by Screen Burn, KONAMI and Annapurna Interactive.A woman in a blue uniform looks down, checked curtains behind her. Screenshot from the game's Steam store page. Owned by Screen Burn, KONAMI and Annapurna Interactive.A bald, bearded man in a dark jacket, seen from below in a doorway. Screenshot from the game's Steam store page. Owned by Screen Burn, KONAMI and Annapurna Interactive.
Three frames from the game’s Steam page show people in the story. Not found: any source that says which actor or character appears in which frame, so the cards below are not paired with them.
JA
Plays Simon OrdellJovan Adepo
The protagonist, called back to the island of St. Amelia. What the official copy says about where and when the story is set is on the setting page. Because the game is played in first person, PlayStation says some of Simon’s thoughts arrive as text on screen rather than spoken aloud, which is covered on the first-person page.
A nurse from a local family clinic in St. Amelia, first heard through the CRTV calling Simon back to the island. Observation, the credit listed for Burrows, is an earlier game from the same studio.
One language list, 13 entries, split by the single mark Steam prints beside each one. Filled chips are the languages with full voice-over. Original diagram for this site.
The description of the official Japanese cast trailer lists the same three names as the English announcement, with the character names in Japanese, and no other actors. Japanese cast trailer on YouTube. Metacritic’s aggregated crew list, which is not first-party and does not say which language each credit is for, adds three names beyond the three above: Kenjirô Tsuda, Christopher Sabat and Philip Rosch (credited as “Male 02”). What would change this: a first-party credit list or announcement that names a voice actor and says which language they recorded in. Crew listed on Metacritic: PS5 critic reviews
More from the cast
KONAMI’s Press Start showcase carried video messages from the cast, and Steam posted the archive. Posted in Steam announcements (ISteamNews API)
The other official videos, including the composer’s track and the two studio films, are on the trailer page. Credits beyond the cast, meaning who scored the game and who did the sound, are on the composer page.