Keith Shadis (spelled Keith Sadies in some English dub materials), the stern commandant of the 104th Cadet Corps and former commander of the Scout Regiment, is voiced by Tsuguo Mogami in the original Japanese version of Attack on Titan. In the English dub, the character is voiced by Patrick Seitz. Both actors portrayed Keith throughout the television series, OVAs, films, and related franchise projects.

Japanese Voice Actor (Tsuguo Mogami)

Date of Birth

Tsuguo Mogami (最上 嗣生)

A full birth date for Tsuguo Mogami has not been widely published in official public sources. He is known to be from Saitama Prefecture, Japan.

About Tsuguo

Tsuguo Mogami is a Japanese voice actor affiliated with Ken Production. He is known for voicing authoritative figures, military personnel, and imposing characters across anime and games.

As Keith Shadis, Mogami delivers a commanding performance that captures the character’s intimidating presence as a military instructor while also conveying the regret, self-doubt, and humanity revealed later in the story. His work helps transform Keith from a seemingly harsh drill instructor into one of the series’ most tragic and respected supporting characters.

Hometown

Saitama Prefecture, Japan.

Career Highlights

Some of Tsuguo Mogami’s most notable documented roles include:

  • Keith Shadis — Attack on Titan
  • Atsuhiro Sako / Mr. Compress — My Hero Academia
  • Crust — My Hero Academia
  • Andross — Star Fox Zero: The Battle Begins
  • General Pepper — Star Fox Zero: The Battle Begins
  • Hang Zang-Ching — Shaman King (2021)

Full Current Filmography

The following list reflects major documented credits from publicly available sources and may not be exhaustive.

Television Anime

  • Attack on Titan — Keith Shadis
  • Attack on Titan: Junior High — Keith Shadis
  • My Hero Academia — Atsuhiro Sako / Mr. Compress
  • My Hero Academia — Crust
  • BNA: Brand New Animal — Saotome
  • Plunderer — Sergeant
  • Shaman King (2021) — Hang Zang-Ching, Chris Venstar
  • Guin Saga — Duke Bek

Video Games and Related Animation

  • Star Fox Zero: The Battle Begins — Andross, General Pepper
  • Attack on Titan game adaptations — Keith Shadis

Critical Reception

Fans often praise Mogami’s portrayal of Keith Shadis for the way it evolves alongside the character. Early in the series, his harsh delivery establishes Keith as a fearsome military instructor, while later episodes reveal a more reflective and sympathetic figure. His performance during Keith’s backstory and final appearances is frequently cited as one of the emotional highlights among the show’s supporting cast.

Our Sources

English Voice Actor (Patrick Seitz)

Date of Birth

Patrick Seitz

  • March 17, 1978

About Patrick

Patrick Seitz is an American voice actor, ADR director, and scriptwriter widely recognized as one of the most prolific performers in anime dubbing. Known for his powerful voice and commanding delivery, he frequently portrays military leaders, warriors, mentors, villains, and larger-than-life personalities.

As Keith Shadis in Attack on Titan, Seitz delivers a stern and authoritative performance that perfectly fits the intimidating commandant of the 104th Cadet Corps. As the series progresses and more of Keith’s past is revealed, Seitz also brings depth and vulnerability to the character, helping audiences understand the regrets and sacrifices that shaped him.

Hometown

Patrick Seitz was born in Riverside, California, United States.

Career Highlights

Some of Patrick Seitz’s most notable roles include:

  • Keith Shadis — Attack on Titan
  • Franky — One Piece (Funimation/Crunchyroll dub)
  • Endeavor (Enji Todoroki) — My Hero Academia
  • Jiren — Dragon Ball Super
  • Kenpachi Zaraki — Bleach
  • Dio Brando / DIO — JoJo’s Bizarre Adventure
  • Ira Gamagoori — Kill la Kill
  • Laxus Dreyar — Fairy Tail
  • Scorpion — Mortal Kombat animated projects and games

These roles have established Seitz as one of the most recognizable voices in anime and gaming.

Full Current Filmography

The following list reflects major documented credits from reputable industry sources and may not be exhaustive.

Television Anime

  • Attack on Titan — Keith Shadis
  • My Hero Academia — Endeavor
  • Bleach — Kenpachi Zaraki
  • JoJo’s Bizarre Adventure — DIO
  • Dragon Ball Super — Jiren
  • One Piece — Franky
  • Fairy Tail — Laxus Dreyar
  • Kill la Kill — Ira Gamagoori
  • Akame ga Kill! — Esdeath’s associates and supporting roles
  • Baki — Biscuit Oliva

Anime Films

  • Attack on Titan compilation films — Keith Shadis
  • My Hero Academia film series — Endeavor
  • Dragon Ball Super: Broly — Jiren
  • Dragon Ball Super: Super Hero — Jiren
  • Bleach film projects — Kenpachi Zaraki

Video Games

  • Attack on Titan game adaptations — Keith Shadis
  • BlazBlue series — Bang Shishigami
  • Persona 4 Arena — Teddie
  • Fire Emblem Heroes — Multiple Characters
  • World of Warcraft — Various Characters
  • Mortal Kombat projects — Scorpion
  • Numerous anime and action-game franchises

Critical Reception

Patrick Seitz’s portrayal of Keith Shadis is often praised for its authenticity and emotional range. Early in the series, his commanding voice makes Shadis one of the most intimidating authority figures in the military. Later, during episodes exploring Keith’s history with Grisha Yeager and the Scout Regiment, Seitz’s nuanced performance helps reveal the character’s insecurities, regrets, and ultimate heroism.

Many fans consider Keith’s later-story development among the most underrated character arcs in Attack on Titan, and Seitz’s performance is frequently cited as a key reason those scenes resonate so strongly.

Beyond Attack on Titan, Seitz has earned widespread acclaim for iconic performances as Endeavor, DIO, Kenpachi Zaraki, Franky, and Jiren, making him one of the most celebrated English dub actors in the industry.

Our Sources

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Published by mayciballesteros03

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