According to the official website for One Piece, Charlotte Katakuri will be voiced by Tomokazu Sugita in the anime. Katakuri will make his anime debut in the 825th episode, “A Liar! Luffy and Sanji!!”, which is scheduled to air on February 11th. His appearance was first teased in Hope, the 20th One Piece opening.
Among Tomokazu Sugita’s several roles, he is known for voicing Gintoki Sakata (Gintama), Joseph Joestar (JoJo’s Bizarre Adventure), Kyon (The Melancholy of Haruhi Suzumiya), and Tadaomi Karasuma (Assassination Classroom). In addition, he also voiced Brock in Pokémon Origins. For a detailed list of his previous work, please check this website.
Please try to support the official sources in any way possible. If you are a fan of the manga, then you can buy Viz’s One Piece Box Set: East Blue and Baroque Works (volumes 1-23), One Piece Box Set 2: Skypiea and Water Seven (volumes 24-46), and One Piece Box Set 3: Thriller Bark to New World (volumes 47-70). The first omnibus edition of the Color Walk series in English, “One Piece Color Walk Compendium: East Blue to Skypiea”, is up for pre-order on Amazon. As for the anime fans, One Piece collection sets come with episodes from the beginning up to the timeskip, while the post-timeskip episodes up to episode 563 are available on voyage sets with both the English and Japanese audio tracks. As for the weekly simulcast, the anime is currently available for streaming on Crunchyroll, Funimation, Viz, and VRV.