Dux

 “Don't Fux with DUX.” 

Dux (DUX) was a Farfetch'd in Red's party. She became an important member of the team after players were able to successfully teach her HM01 Cut.

History
DUX was aquired early on through an in-game trade, in exchange for a Spearow. She quickly became an essential member of the party due to learning the HM Cut.

One notable battle of her was in Silph Co against a Rocket's Marowak. DUX was the only remaining member of the party who hadn't fainted, and due to her immunity to ground types, continually avoided Marowak's Bone Club. Meanwhile, he constantly was using leer on her opponent, staring her opponent down and dropping her defenses. Soon after, DUX used Cut twice and killed the Marowak.

Personality (Lore)
Dux, Digrat, and Cabbage are often found together in lore, considering they were the major three Pokemon released on Bloody Sunday.

Name
Because DUX was aquired via in-game trade, her in-game name was not chosen by the players.

Release
Dux was accidently released at 10d 13h 13m during the events of Bloody Sunday. Her release was seen as a huge loss by the community, because she was one of the only Pokemon that knew Cut, along with Cabbage.

Return
Dux returned in run #28 on 19h 26m by trading a Spearow.

Trivia

 * After Dux and the Admiral were released, many viewers believed the first Cut user of every game was doomed to be released. However, the fact Chairman Meow survived in FireRed has mostly ended that theory.
 * In gen 2 transfer, it is revealed that Dux is female.