Patrick Seitz is an American voice actor, ADR (Automated Dialogue Replacement) director, and script writer known for his extensive work in English dubs of Japanese anime and video games. Born David Patrick Seitz on March 17, 1978, in Riverside, California, he developed an early interest in performance, beginning acting in plays at the age of fourteen. He pursued higher education at the University of California, Riverside, where he earned a Bachelor of Arts in Creative Writing and later a Master of Fine Arts in Creative and Performing Arts Writing. Prior to fully committing to a voice-over career, he worked as an English teacher at his high school alma mater.

Seitz entered the voice-over industry in 2000, with one of his earliest roles being in the OVA Amazing Nurse Nanako. Since then, he has become a prolific figure in the industry, contributing to hundreds of projects not only as a performer but also behind the scenes. His skills as a writer are frequently utilized, as he has adapted scripts for numerous anime series, including Hell Girl, Zegapain, and Romeo x Juliet. He has also served as an ADR director on various titles, such as Girls Bravo, Kamichu!, and Carole & Tuesday, demonstrating a comprehensive understanding of the dubbing process.

Seitz's voice is recognized for its power and versatility, often bringing to larger-than-life characters. He is particularly well-known for his portrayals of imposing and authoritative figures. In the long-running series One Piece, he voices the cyborg shipwright Franky, a role he has played across the main series and films like One Piece Stampede. In the My Hero Academia franchise, he is the voice of the fiery and complex hero Enji Todoroki, also known as Endeavor, a role he has reprised in films such as My Hero Academia: Heroes Rising and World Heroes' Mission. He also plays the powerful Dragon Slayer Laxus Dreyar in Fairy Tail and the colossal warrior Thorkell in Vinland Saga.

Beyond these prominent roles, Seitz has voiced a wide array of characters across different genres. He is the voice of the vampire DIO in various installments of JoJo's Bizarre Adventure, the loyal shopkeeper Agil in the Sword Art Online series, and the intense Kunikida Doppo in Bungo Stray Dogs. His filmography includes the brutal Uvogin in Hunter x Hunter (2011 series), the fan-favorite Kenpachi Zaraki in Bleach, the menacing Riz in BEASTARS, and the determined Keith Goodman/Sky High in Tiger & Bunny 2. In the world of Fate, he has voiced characters like True Assassin in the Heaven's Feel film trilogy and Kairi Sisigou in Lord El-Melloi II's Case Files. He has also taken on comedic and unique roles, such as Germany in the long-running Hetalia series, the shadowy Dobu in ODDTAXI, and Umehito Nekozawa in Ouran High School Host Club.

In addition to his anime work, Seitz is highly active in the video game industry, with notable performances as Ragna the Bloodedge in the BlazBlue series, Scorpion in the Mortal Kombat games, Garrosh Hellscream in World of Warcraft, and Jiren in Dragon Ball Super. His contributions to the field have been recognized with accolades such as the First Annual BTVA Anime Dub Award for Voice Actor of the Year. Through his powerful performances and extensive work as a director and writer, Patrick Seitz has established himself as a significant and enduring talent in the world of English anime localization.