Trebor walks though the Jedi Temple during the Separatist Crisis.
A Vurk male born on his species' homeworld of Sembla, Coleman Trebor's attunement to the Force was spotted early on, and he joined the Jedi Order. Trebor completed his training as an Initiate and Padawan, passing the Jedi Trials and becoming a full-fledged Jedi Knight. Wielding a green lightsaber in his service to the Jedi Order, Trebor sharpened his skills and connection to the Force, taking on many assignments in the pursuit of peace and justice. Over the course of Trebor's career, the Vurk Jedi's wisdom and serene demeanor brought many disputes to a harmonious end. Eventually, Trebor was granted the rank of Jedi Master by the High Council in recognition of his years of knowledge and experience. After veteran Jedi Master Yarael Poof perished on a fateful mission, the Jedi High Council extended an invitation to Master Trebor to replace the fallen Quermian Jedi.
In 22 BBY, Master Trebor was present on the Council when an attempt on Senator Padmé Amidala's life was discussed. It was decided that the Jedi Padawan Anakin Skywalker was to accompany Amidala to her home planet of Naboo while his master Obi-Wan Kenobi investigated the assassin's origin. Sometime later, he was in the Jedi Temple as Kenobi made his way to confer with Master Yoda.
Once the Council learned of the Separatist force on the planet Geonosis, Trebor joined the Jedi assault team led by Mace Windu and traveled to Geonosis to rescue Kenobi from the Confederacy of Independent Systems. He fought in the Petranaki Arena, beginning the battle standing alongside Bultar Swan, a young Jedi Knight.
Trebor was able to briefly confront Count Dooku before being gunned down by Fett.
During the battle, Trebor infiltrated the stands and confronted the former Jedi Master Count Dooku on a balcony, aiming to put a swift end to the conflict before it could spread out of control. The bounty hunter Jango Fett, who was standing next to Dooku, fired a quick salvo of blaster bolts at Trebor. Taken aback, Master Trebor deflected the first two shots from Fett's blaster before a third struck him in the shoulder and then a fourth in his chest, knocking him over the balcony railing and sending him falling to his death on the arena floor. Later on in the battle, Mace Windu avenged the death of his colleague, dispatching the cunning Fett with his amethyst lightsaber.
The death of Coleman Trebor opened up a vacancy on the Jedi High Council, an opening that remained as such for several months as the Council struggled to find a replacement for the noble Vurk Jedi. During this time, various Jedi Masters rotated in Trebor's Council position as temporary Council members until finally the renowned Jedi Obi-Wan Kenobi, a survivor of the Petranaki Arena, was selected. For a time, Master Kenobi inwardly grappled with feelings of doubt and insecurity, believing himself unworthy of assuming the position of a Jedi so wise, experienced and skilled as Coleman Trebor.
Trebor was respected as a skilful mediator who settled difficult disputes harmoniously. Although he was also a skilled lightsaber wielder, he could not match the same skills that Jango Fett utilized.
Coleman Trebor wore Jedi robes and carried a green lightsaber with him. Trebor had thick reptilian skin, and a long, bony ridge on his head that grew perpetually. He had a food and energy capsule on his waist.
A completely computer-generated character, Coleman Trebor first appeared in the 2002 film Star Wars: Episode II Attack of the Clones, the second installment of the Star Wars prequel trilogy. He was conceptualized, created, animated, and then named after Rob Coleman, the animation director of the prequels. This effectively makes Coleman Trebor one of Robert Coleman's cameo roles.
For Episode II scenes in the Jedi Council Chamber, stock footage from the 1999 film Star Wars: Episode I The Phantom Menace was reused, with Trebor digitally painted over Yarael Poof, who was replaced as director George Lucas felt the audience would confuse him with the newly-introduced Kaminoans. Coleman Trebor's name was derived from that of Rob Coleman of Industrial Light & Magic ("Trebor" is "Robert" backward). Coleman recalled that the character's name was suggested by Visual Effects Supervisor John Knoll to Lucas, just as he was picking names and roles for the array of aliens concept sculptors Michael Murnane and Robert E. Barnes displayed for him in an Art Department meeting at the Skywalker Ranch following an intense sculpting jam session. From that, Trebor was named, got a maquette realized for his image and was painstakingly animated and composed into the Jedi Temple and Petranaki Arena scenes.
Although the film depicts Trebor as dying when shot by Jango Fett, Coleman insisted to Lucas that Trebor should have survived a simple "flesh wound" and that he is never seen hitting the floor. The 2017 reference book Star Wars: The Visual Encyclopedia confirmed his death.
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