Dark Pit (ブラックピット, Black Pit), is a character from the Kid Icarus series. He is a rival and clone of Pit, created after Pit destroyed the Mirror of Truth. He is almost visually identical to Pit, but has a black outfit, black wings, black hair, and red eyes. He also has a more serious and aggressive personality.
In Kid Icarus: Uprising, Dark Pit was created from the Mirror of Truth, a mirror that possesses the ability to duplicate beings and objects into the exact opposite of the person that has used it. In Chapter 5, Pit destroyed the mirror and Dark Pit was created the moment the Mirror caught onto the image of Pit. The owner of the mirror, Pandora, planned to use the mirror to create a "Pit" to pledge allegiance to the Underworld Army. However, Dark Pit soon attacked her, absorbed her powers to gain infinite flight, then fled from the Labyrinth of Deceit only to follow up to Pit and Palutena chasing after him. During his battle with Pit, Dark Pit claims that unlike him, he follows no one but himself and that Pit's faith in Palutena only results him into being nothing but a servant.
Later on in the game, Dark Pit is seen fighting off the Underworld forces as Pit was approaching Medusa for the "Final Battle", and aids him temporarily by defeating the Underworld Gatekeeper only to find that he was being called "Pittoo". He appears later on in the game to aid Pit and Palutena knowing that he and Pit share a bond together, and is also playable in one chapter.
One of Pit's palette swaps in this game is a black colored Pit described on Smash Bros. DOJO as a "fallen angel". However, since Brawl predates the true debut of Dark Pit in Kid Icarus: Uprising, it is likely this design became the basis for his creation, especially since both games are directed by Masahiro Sakurai (whose redesigns of Pit and Palutena in Brawl also went on to be used in Uprising.)
As a playable character
Main article: Dark Pit (SSB4)
Dark Pit briefly appeared at the end of Palutena's reveal trailer and in the background of her promotional poster, and was later revealed as a playable character. He functions mostly as a clone of Pit, down to the very meaning of the word: his entire moveset and even his attributes (such as air speed and dash speed) are completely the same as Pit's, with the only differences between them being two of his specials, Silver Bow and Electroshock Arm, his forward tilt inflicting less knockback than Pit's, his neutral infinite's finisher having a smaller hitbox, and his Final Smash, Dark Pit Staff.
In addition, Dark Pit was originally planned to be an alternate costume of Pit, but became a separate character due to a designer having already modeled the Electroshock Arm, as well as Masahiro Sakurai wanting Dark Pit to have his own Final Smash, the Dark Pit Staff.
Dark Pit is tied with Pit for 32nd/33rd out of 55 characters on the current tier list for Smash 4, putting him in the D tier. Although the differences between Pit and Dark Pit are minuscule at best, Dark Pit's Electroshock Arm side special has significantly more KOing power compared to Pit's Upperdash Arm. This was made more apparent in update 1.1.3, which altered Electroshock Arm's launch angle, allowing for better KO potential, particularly when used on opponents close to the edge of the stage. Of course, being a clone of Pit, Dark Pit suffers from the same general KO issues. Currently, Dark Pit has little tournament representation.
As a playable character
Main article: Dark Pit (SSBU)