- Fan Nickname:
- Captain Paranoid/Flyboy - Carth Onasi.
- Big Z - Zaalbar's in-game nickname.
- Mish - Mission Vao
- Bald Old Coot/Grandpa/Trollee - Jolee Bindo
- T3, Tin Can, Mobile Trashcan - T3-M4
- Tall, Pale and Jawless - Darth Malak.
- Darth Bastila - Bastila when she's becoming particularly grating, and when she falls to the Dark Side for real.
- Jossed: Theories about the comic that have been Jossed by the creator and Lucasfilm include: Lucien Draay is Darth Sion and/or Darth Nihilus, Zayne Carrick is the Jedi Exile, and Krynda Draay is Kreia.
- Missing Trailer Scene: One early trailer showed a shuttle with two Sith troopers coming out and standing guard. Then, Malak comes out of the shuttle and pull out his lightsaber.
- Mythology Gag: The helmet of Kylo Ren - who is even explicitly referred to as a Knight - has a striking similarity to Darth Revan's.
- Newbie Boom: Put Bioware on the map for console gamers alongside Mass Effect.
- No Export for You: The game was never released in Japan. It also saw no official release in Russia and other post-Soviet countries. All translations are fan- or pirate-made, but the game nevertheless became a popular part of geek culture in said countries.
- Schrödinger's Canon: Despite Disney throwing out all of the previous Expanded Universe, this game fell into an odd place due to Star Wars: The Old Republic being in active production (all new Star Wars media released following the establishment of the new Canon/Legends designations is part of Canon, but while many SW projects in the works prior to the Disney acquisition were cancelled to clear the slate, SWTOR remained the sole exception and continued to receive support and new content). To be clear, Knights of the Old Republic, Knights of the Old Republic II: The Sith Lords, and The Old Republic are firmly classified as Legends, not Canon, though elements from them have been partially restored to Canon status via name-drops and easter eggs (The Rise of Skywalker visual guide named several First Order battalions after Sith Lords, with Revan being name-dropped as one such battalion).
- Throw It In!: HK-47 was initially supposed to speak in a Machine Monotone, but Kristopher Tabori found the whole thing unworkable, and decided to have a few takes where he recorded his lines for Black Comedy instead. As they were getting close to deadline, they threw up their hands and let him have a go. By the time the deadline passed, Tabori's "cross the line a dozen times" comedic take had won out, and a Breakout Character was born.
- What Could Have Been:
- They recorded the "tell me about this planet" conversations for Juhani, the same kind that you get for other party members, but they were cut from the final game. You can restore them with GameMods.
- Though it is not nearly as obvious as the sequel, there is actually a fair deal of cut content. Believe it or not, an entire planet (Sleheyron) and its Star Map was cut from the game early in development. As with the sequel, there is a general restoration mod undergoing development and a Sleheyron Restoration Mod.
- The Tatooine Star Map was originally housed in a Sarlacc pit.
- There was supposed to be an alternate plot resolution to Tatooine in which the sandpeople would declare you their messiah, and Czerka would be driven off the planet. Unfortunately, the necessary lines for HK-47 were never recorded, so it is impossible to restore this.
- It was originally possible to fight the Krayt Dragon, as the mines would only weaken it enough to be made vulnerable, but the idea was scrapped, and it is just killed by the mines.
- Among the content that was still Dummied Out in the files, though, that have since been restored with mods are Deadeye Duncan from the Taris Dueling Ring appearing on Manaan asking to be able to use the name of the 'Mysterious Stranger,' the title used by Revan in the Ring, and an alternate ending for female Revan to be able to kill Bastila and remain on the Star Forge with Carth as it is destroyed.
- Swoop racing was originally meant to be much more than a story element on Taris and two optional courses on Tatooine and Manaan. The only hint of what could have been was mention of swoop upgrades. Indeed there was much more planned, including customizing your own personal bike, but it was not to be.
- Very early in development Bastila's role was planned to be filled by Vima Sunrider, a character from the Expanded Universe, but this had to be changed due to trademark issues. This also lead to Juhani having her name changed, as originally she was going to be named Bastila.
- The game was originally planned to take place in the Clone Wars during the prequel trilogy, which could've led to the player characters interacting with people like Obi-Wan, Yoda, or Anakin. However it was decided to move the story several thousand years earlier to give the team creative freedom.
- According to unused data files, during the Sunry murder trial questline, there was originally going to be a datapad from Elassa, a message to her Sith master explaining her intent to kill him the same night he killed her.
- Word of God: John Jackson Miller's blog contains a lot of explanations that confirm or have Jossed fan speculation.
Trivia / Knights of the Old Republic