Juan "Johnny" Rico is a fictional character from the science fiction novel "Starship Troopers," written by Robert A. Heinlein. He serves as the protagonist and narrator, detailing his experiences in a futuristic military society. Rico enlists in the Mobile Infantry to fight against alien species known as the Arachnids. Rico's journey explores themes of citizenship, duty, and the moral implications of war. Throughout the story, he undergoes significant personal growth, transitioning from a young recruit to a seasoned soldier. His character has been adapted in various media, including a popular film released in 1997.