Rather than simply arguing his case, Apollo, like his mentor Phoenix Wright, uses detective skills to gather relevant evidence and investigate the crime scene. Apollo additionally has a partially hereditary condition from his mother's side which allows him to "tell" the intents of those around him by reading their body language, which he believes to be related to the tightness of the band he wears around his wrist. In the fourth game, "", Apollo must defend former defense attorney Phoenix Wright, discovering the true perpetrator of the crime Wright is accused of to be Apollo's own mentor, Kristoph Gavin. Throughout the game, Apollo is hired to defend various people of murder after joining the "Wright Anything Agency" alongside its CEO, Wright's adopted daughter Trucy. The game culminates with Apollo facing rival prosecutor and Kristoph's brother Klavier Gavin and revealing Kristoph's role behind Wright having been unjustly disbarred. After the main game's events, Trucy is revealed to be Apollo's younger half-sister, with an amnesiac witness from his second case being their mother, information which remains unknown to both Trucy and Apollo. Apollo returns as a protagonist in the fifth main series installment; "". In this installment, he briefly leaves the Wright Anything Agency to individually investigate the murder of Clay Terran; a crime that he suspects his new coworker Athena Cykes of committing. After Phoenix accuses a spy known as the "phantom" of the murder however, Apollo rejoins the agency. In the sixth main game; "", Apollo faces off against Nahyuta Sahdmadhi; an international prosecutor and monk from the Kingdom of Khura'in who is later revealed to be his adoptive brother. After defeating Phoenix in a civil case, Apollo goes to Khura'in himself and becomes an instrumental figure in the final days of the conflict between Queen Ga'ran Sigatar Khura'in and the resistance group the Defiant Dragons. As a result of his efforts, the queen is dethroned and the Defense Culpability Act, which states that someone found to be supporting a criminal is to receive the same punishment as them, is nullified. Apollo then leaves the Wright Anything Agency and sets up his own law firm; the Justice Law Offices, in Khura'in.  Apollo Justice appears in a Japanese manga adaptation of the fourth game, written and illustrated by You Satsuki and Miho Shimazu, and published by Bros. Comics Ex and Capcom on August 1, 2007. The series has yet to be published outside of Japan.