The official website for the One Piece franchise revealed more guest cast members on Saturday for the One Piece Stampede anime film.

Naoto Takenaka will return to voice a character for the third time in a One Piece film. Takenaka previously voiced Shiki in One Piece Film Strong World and Double Down and White Jack in One Piece Film Gold . The site did not state who Takenaka would voice in the new film, but asked fans to try to find his character at the Pirates Festival.

Chinese singer and model Ron Monroe and the YouTuber group Fischer's will also appear in the film. Fischer's also have a crossover manga with One Piece that debuted last August.

The film will open in theaters in Japan on August 9, in celebration of the anime's 20th anniversary. Fuji TV describes the film's story:

The world's greatest exposition of the pirates, by the pirates, for the pirates - the Pirates Festival. Luffy and the rest of the Straw Hat Crew receive an invitation from its host Buena Festa who is known as the Master of Festivities. They arrive to find a venue packed with glamorous pavilions and many pirates including the ones from the Worst Generation. The place is electric.



Other guest cast members include:

Tsutomu Isobe as Douglas Bullet, a former member of Roger's pirate crew



Yūsuke Santamaria as Buena Festa, a promoter for the "Pirate's Festival," a festival by pirates and for pirates



Rino Sashihara as Ann



Ryōta Yamasato as Donald Moderate



The latest anime film in the One Piece franchise, One Piece Film Gold , opened in Japan in July 2016. Funimation screened the film in theaters in the United States with an English dub in January 2017. The company then released the film on DVD and Blu-ray Disc in May 2017.

A One Piece film opened every year in Japan between 2000-2009. The 30-minute One Piece 3D: Mugiwara Chase film opened in March 2011, and the One Piece Film Z movie opened in December 2012.