馬堂 一徹

Tyrell Badd is a homicide detective in charge of the various investigations of the "Great Thief" known as the Yatagarasu. Badd has been a detective for many years, overseeing a wide variety of cases and earning a great deal of respect from fellow detectives such as Dick Gumshoe. 

Badd is a tough veteran detective, having covered many cases in which his life was at risk, evident from his bullet hole-filled trenchcoat. He takes his job seriously. Badd was good friends with Byrne and treats Kay like they're blood relatives. Despite this, he has little patience for people he feels are wasting his time, and he doesn't appreciate being forced to take a backseat to those less competent than he is.

Badd was one of the detectives assigned to protect Cece Yew, an employee of the Amano Group, who was to testify about her employer's role in an international smuggling ring. However, someone managed to enter her apartment and kill her. Still, the evidence pointed towards Manny Coachen as her killer, due to a surveillance video of Yew's apartment that caught Coachen entering with a knife, and thus he was tried. However, some members of the Amano Group lured Badd into a trap and managed to steal the tape. Thus, the prosecutor, Byrne Faraday, was unable to convict Coachen. Half of the bullet holes in Badd's jacket were said to have been from that incident.

The trial affected Badd and Faraday deeply, as well as the woman's grieving sister Calisto Yew, who slapped Badd and told him she never wanted to see him again. However, the three ended up working together and becoming the Yatagarasu, a "noble thief" who would steal the truth when the law could do nothing. Calisto Yew would get close to companies and people in her job as a defense attorney, while Byrne Faraday could use a small device to detect security measures protecting the Yatagarasu's targets. Badd became the head of the Yatagarasu investigation and, in doing so, was put in a position in which he was able to remove any evidence that would reveal the true identities of the Yatagarasu.

Seven years later, Badd broke into Faraday's old office, which Edgeworth now occupied, to steal the KG-8 files. He discovered a dead body in the room, but he paid little attention to it as he rummaged through Edgeworth's files to find what he wanted. Edgeworth then returned before Badd could clean up, so Badd pointed a gun at him and escaped into the hallway. Edgeworth later discovered the KG-8 file just outside his office, minus some pages. The young prosecutor had no idea of the intruder's true identity, but he did find the first intruder who had committed murder in his office, Jacques Portsman, who had received a directives card from the smuggling ring's leader to dispose of evidence incriminating the CEO of the Amano Group, Ernest Amano./

Taken from URL=http://aceattorney.wikia.com/wiki/Tyrell_BaddThe Ace Attorney Wiki.