Monsters (stylized in all caps) is a Japanese one-shot manga written and illustrated by Eiichiro Oda.

An original net animation (ONA) adaptation, titled Monsters: 103 Mercies Dragon Damnation, was produced by E&H Production and premiered on Netflix in January 2024.

Written and illustrated by Eiichiro Oda, the Monsters one-shot was published by Shueisha in 1994 in the Autumn Special issue of Weekly Shōnen Jump (with cover date October 30).

[9] The character Ryuma would later appear as a zombie in Oda's One Piece manga series during the Thriller Bark story arc, thus officially linking the events of both works.

[15][16] Titled Monsters: 103 Mercies Dragon Damnation (MONSTERS 一百三情飛龍侍極, Monsutāzu: Ippaku Sanjō Hiryū Jigoku), the original net animation (ONA) premiered worldwide on Netflix on January 21, 2024,[17][18] and January 23 in Japan.