Birthplace: McKinney, Texas, U.S.A.
Tatum is an American voice actor, ADR director, and script writer at Funimation/OkraTron 5000 who provides voices for a number of English versions of Japanese anime series, and video games.
From January 2010 to January 2014, John hosted "That Anime Show" with friend and co-worker Terri Doty and ADR Engineer Stephen Hoff.
On October 16, 2018, he became engaged to his long-time partner and fellow voice actor Brandon McInnis in Paris. He resides in Los Angeles, California.