The main protagonist of the first three Ace Attorney games and manga, Phoenix Wright is a valiant defense attorney, working hard to ensure justice for all!
For more information, see the Phoenix Wright page on Giant Bomb here.
The first game begins with Nick's (as he is affectionately called) first case, though it is not the earliest chronological appearance of the character: in the third game, he appears multiple times in flashbacks, as a witness in some of his mentor, Mia Fey's, cases. It is revealed that initially, Phoenix did not want to become a defense attorney; instead, he wanted to be an artist. But after being accused of stealing a classmate's lunch money in the fourth grade, Phoenix was put on a "class trial," which is where is first met his friend-turned-rival-turned-friend-again, Miles Edgeworth, as well as his oft-troubled friend Larry Butz. The two stand up for Phoenix and inspire him to help people. In the "Progress Toward Tomorrow" manga chapter, Wright's reasons for becoming a defense attorney are more deeply fleshed out.
Wright is an empathetic character, willing to do anything he can to uphold justice. This often leads to some interesting plot twists, particularly during a high profile case. For example, in one case, Wright had to lose on purpose to catch the real murderer, who was his client.
In one case, Phoenix comes across the Magatama, which grants him the ability to see Psyche-Locks. These Psyche-Locks are the manifestations of people's lies, and cannot be broken unless enough evidence is provided.