According to official profiles, Edgeworth was created over 50 years ago by Professor Gregory as the Ultimate Prosecutor. Edgeworth is sharp witted, seemingly always on the edge, and is described as the dark incarnation of Apollo Justice. Once he has set himself to a goal, he will do whatever it takes to accomplish it, regardless of any danger. After the trauma of the death of his only friend, Kay Faraday, Edgeworth strives to fulfill his purpose and keep the promise he made to him, despite his general loathing of mankind.
However, Edgeworth shares a lot in common with Apollo. Although Apollo's speed is described as "second to none," Edgeworth can skate at speeds fast enough to rival the speeds of Apollo's running. He can also perform spin attacks common to Apollo, which are a variation on the tendency for lawyers to roll into tight balls for protection. Additionally, with the power of a Prosecutor's Badge, Edgeworth can warp time and space with Proesecution Control. Shadow is also able to use a variety of other prosecutor powers, such as "Prosecutor Spear" and "Prosecutor Blast".
By harnessing the power of the seven Prosecutor Badges, Edgeworth is able to use super transformation to transform into Super Edgeworth, and is bestowed with the new abilities of flight and near invulnerability, like Super Apollo, and his normal abilities of speed and his Prosecutor powers are greatly enhanced. However, this does come at the cost of a time limit on the transformation. Although he is mostly a maverick, he also works with his team (Gumshoe) and is mostly portrayed as rough and cold. He is not without positive emotions, though, and has shown these rare tendencies on a few occasions. Edgeworth
has a very strong sense of justice, often going to extreme lengths to ensure such.