Antidar Williams was a human officer of the Judicial Forces of the Galactic Republic, training at the Judicial Academy on the planet Coruscant. In 32 BBY, he and Captain Maoi Madakor piloted the Consular-class space cruiser Radiant VII while transporting two Jedi ambassadors—Qui-Gon Jinn and Obi-Wan Kenobi—to the Naboo system in order to negotiate an end to the Trade Federation's blockade of the planet Naboo.
After docking on the Federation flagship, the Saak'ak, Williams and Madakor waited aboard the Radiant VII but were killed when the cruiser was ambushed and destroyed by a ceiling-mounted droid laser turret on the orders of the Sith Lord Darth Sidious.
Antidar Williams was a human male from the planet Barkhesh who served as an officer of the Galactic Republic's Judicial Department. After receiving military training at the Judicial Academy on the planet Coruscant, capital of the Republic, Williams and other Judicials worked together with the Galactic Senate's Diplomatic Corps and the Jedi Order's Council of Reconciliation to maintain peace in the galaxy.
In 32 BBY, he was chosen to co-piloted the Diplomatic Corps Consular-class space cruiser Radiant VII alongside Captain Maoi Madakor while transporting Jedi Master Qui-Gon Jinn and his Padawan, Obi-Wan Kenobi, to the Naboo system. The two Jedi were acting as ambassadors on behalf of Republic Supreme Chancellor Finis Valorum in the hopes of negotiating an end to the Trade Federation's blockade of the planet Naboo.
Upon reaching the blockade, the Radiant VII docked in one of the main hangars aboard the Trade Federation flagship, the Saak'ak. Williams and Madakor remained in the cruiser's cockpit while the Jedi left to meet with Federation Viceroy Nute Gunray. Learning that the Jedi had been sent to negotiate, Gunray contacted his master, the Sith Lord Darth Sidious, who ordered him to kill the Republic party.
Under Gunray's orders, a droid laser turret descended from the ceiling in the hangar where the Radiant VII was parked and opened fire on the vessel. Williams immediately saw the attack coming and tried to warn Madakor, who ordered him to activate the cruiser's shields, but it was too late, and both were instantly killed as the cruiser exploded. The Jedi were able to avoid the Federation's attempt on their lives and escaped the Saak'ak, ultimately helping to defeat the Federation after it invaded Naboo.
While on the Radiant VII, Williams wore a blue Judicial Forces uniform and was unarmed.
Antidar Williams was created for the 1999 prequel trilogy film, Star Wars: Episode I The Phantom Menace, in which he was played by Silas Carson. Although Carson initially auditioned for a separate, slightly more prominent pilot role that ended up not making it into the film, casting director Robin Gurland enjoyed the interview with him and so mentioned him to director George Lucas. Deciding that Carson looked like an interesting person, Lucas had him come back in for animatics and then gave him the part of the Jedi Ki-Adi-Mundi instead.
Carson was later also given the roles of Nute Gunray and Senator Lott Dod, both of which, along with Mundi, required him to wear prosthetics that covered his face. Carson mentioned to Gurland that he would like for his actual face to appear in the film, so when it came time to cast Williams, Gurland asked him if he would like the role. All of the scenes in the cockpit of the Radiant VII were filmed on September 8, 1997.
The Antidar Williams character was first given a name in the new Star Wars canon by the mobile card game Star Wars: Force Collection, which initially launched in 2013. Although the launch of Force Collection predates the Star Wars canon reset of 2014, Lucasfilm Story Group member Leland Chee confirmed that the game was kept updated to fit with canon.
In Star Wars Legends, Williams appeared prior to the film's release in the novelization of The Phantom Menace, written by Terry Brooks. The character was originally given a surname by the Coruscant Limited expansion set of the Star Wars Customizable Card Game in 2001. The forename "Antidar" was then created by fan Ian Tapley for the "What's The Story?" feature on StarWars.com. Tapley initially wanted the character's first name to be a tuckerization of his own name or one of his nicknames, but after being unable to come up with a satisfying result, he settled for an anagram of "radiant"—a reference to Williams's ship, the Radiant VII.
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