Miles had earned the nickname of the "Demon" Attorney from the mass media. Before his encounter with Phoenix Wright, he was known as the man who would go through ruthless tactics to earn a "guilty" verdict. He was, after all, learning all of this from the veteran Manfred von Karma. Miles' satisfying snickering and smug bows during his victories over defense attorneys made him a terrifying force to fight with. And with a 4 year winning streak, he was going to be a monster like Manfred - not accepting a single flaw.
Due to this fact, he was received a lot of resentment from his jealous rivals. Rumors were whispered that the man would cheat and lie in order to keep his perfect record. It can't be denied that Edgeworth does some underhanded work, whether these rumors were true or not. In "Turnabout Sisters" and "Turnabout Beginnings", he executed this practice several times:
history of crime
→ Incident #1: Phoenix proves that Mia couldn't have written the note because she should have died instantly from the blow. Edgeworth then says that the autopsy report Phoenix had was "outdated". He then shows a new report, requested by him, that proves that she was lingering death after the attack. So Mia could have possibly written the note with Maya's name on it. However, Mia herself (through channeling) says she didn't write this note. The autospy was most likely a lie.
→ Incident #2: Edgeworth believes April May's wiretapping had nothing to do with the case. He would call the witness bellboy to testify about it ONLY if Phoenix accepts the guilty verdict on Maya should the bellboy prove him wrong.
→ Incident #3: Edgeworth withholds crucial information that April May was checking in the Gatewater Hotel with Redd White. The bellboy accidently spills the beans while tesifying, and even says that Edgeworth silenced him about it. He claims that Mr. White was "busy" and his mention was unnecessary. In truth, he knew the link of Redd White, and felt he would only make Maya look innocent.
→ Incident #4: When Mr. White is revealed to had enter Mia's office sometime to notice that she had a glass stand, Miles tell him to "tell the truth." Basically, in the event that this fact would show up, Miles told Redd to plead to a different crime - the crime of intruding in her office and planting the wire tap a week before murder (so he would have noticed the stand beforehand). This was not true however, since Mia bought the stand just before the day of the crime.
→ Incident #5: Redd White is about to plead guilty when Edgeworth interrupts. He requests one more day to make time for more inquiry. This is merely giving time for Miles to wrap around the facts again to prove Phoenix guilty.
→ Incident #6: Edgeworth intentionally hides the incriminating scarf from the crime scene. Only when suggested as a contradiction by Mia did he finally present it.
→ Incident #7: In order to prove that Fawles had to put the body in the car, Edgeworth states that the map is not "recent", as the bridge may not have been broken at the time. However, this theory completely throws itself out the window when the witness herself mentioned how tattered it was.
Edgeworth also has a habit of "leading the witness" - correcting their holes with incidents that didn't actually happened. But honestly, what prosecutor in this game hasn't done that, aside from Payne?
a tragic hero
While he is fighting for justice, as well as redemption, and hubris in his work makes Miles a "tragic hero". Tragic heroes are the main focus of a tragedy. Grecian plays such as "Oedipus Rex" or "Antigone" depict that they are related to, or are nobles (rich people, like Edgey in this case), and have a character flaw or harmatia. This flaw eventually turns against the protagonist. According to Aristotle's version of a tragedy, as compared to William Shakespeare, a tragic hero must make a downfall, but not necessarily "die". The audience also is stirred with emotion when this event occurs, known as the catharsis. But most importantly, they must have followed through this on their own volition.
Proceeding with the DL-6 incident, Edgeworth slowly spirals from his acknowledged genius to a complete disgrace. Even with knowledge of doubt, Edgeworth willingly accepts whatever outcome he gets for his actions. If he prosecuted with a short list, he is to be most responsible. If he knew that the DL-6 incident was going to be brought up, he confesses for it. Out of his free will, he is punished for his "harmatia". He begins losing his loved ones, his pride, and notably his own faith until finally Edgeworth "dies" from this misfortune. The player is aroused with pity for him, making him a Grecian tragic hero.