He is a veteran of Osaka Team. He finished the game 3 times. And he was the first one to show how the H- Gun works.

Tokyo teens Kei and Masaru are killed by a subway train but awaken in a room with an ominous black orb that gives them weapons, suits and orders. Fighting bizarre alien monstrosities in a deadly game, will they win their freedom or die for the final time? 
(Source: Dark Horse)

Death does not have to be the end; one can live again, but only through beating the game posed by the black ball called Gantz. 
 
On his way home to celebrate his younger brother's birthday, brave and kind-hearted student named Masaru Katou is stabbed to death. He awakes in a small room with a cityscape view in the heart of Tokyo—and he is not alone. To his surprise, it is not the afterlife, but the waiting room for a high stakes game with their lives on the line. Before he has the chance to process the situation, Masaru is handed a gun and teleported into the center of Osaka to carry out one simple task: eliminate any alien on sight. 
 
Accompanied by the aged Yoshikazu Suzuki, the stunning idol Reika Shimohira, and the cold but experienced Jouichirou Nishi, Masaru must overcome his fears in order to survive the game and return home to his waiting brother. 
 
(Source: MAL Rewrite) 
 
Note: A full 3DCG movie adaptation of the manga's Osaka arc.

Birthplace: Hyōgo Prefecture, Japan

Masaki Sumitani is a Japanese comedian and retired professional wrestler.

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Márcio Dondi is a Brazilian actor, voice actor, dubbing director and radio host. He is the father of the voice actress [Mariana Dondi](https://anilist.co/staff/176923/).

__Non-Anime Roles:__
~!- Rick Mitchell (The Mitchells vs. The Machines)
- Ultron (Marvel Cinematic Universe)
- Bowser (The Super Mario Bros. Movie)
- Roadhog (Overwatch 1 & 2)
- Urgot, the Dreadnought (League of Legends)
- Dexter "Dex" DeShawn (Cyberpunk 2077)
- Eugene Garcia / Mr. Gar (OK K.O.! Let's Be Heroes)
- John Economos (DC Universe movies)
- Anthony "Tony Pro" Provenzano (The Irishman)
- Clifford DeVoe / The Thinker (The Flash)
- Frankenstein (Hotel Transylvania 3: Summer Vacation and Hotel Transylvania: Transformania)
- Jason Blood / Etrigan (Justice League Dark)
- God (Disenchantment)
- George Stacy (Spider-Man: Across the Spider-Verse)
- Toth-Ra (DuckTales 2017)
!~

Jouji Shimaki