Dajjun was a male Jedi Master who served the Jedi Order actively during the height of the Clone Wars. He served the Order and the Galactic Republic as a General in the Grand Army of the Republic during the conflict.
A Force-sensitive trained in the ways of the Force by the Jedi Order, Dajjun eventually attained the rank of Jedi Master after years of study and field work as a Jedi Knight. Taking Initiate Karii as his Padawan, Dajjun heeded the call of the Jedi High Council when the Clone Wars broke out between the Galactic Republic and the Confederacy of Independent Systems; Dajjun took up the rank of General in the newly formed Grand Army of the Republic.
Along with Padawan Karii and several other Jedi, Dajjun was tasked by the High Council to determine the allegiance of the Sheyasti Trade Syndicate in the war. Dispatched to the planet Kailion and accompanied by the droid 4-B4, the Jedi discovered that the Syndicate was smuggling goods and supplies to the CIS. In the process of recovering their proof, the team found difficulty escaping the caves of the world, as they were filled with predators. However, Dajjon's charges were well trained and were able to overcome each hurdle, escaping back to the Coruscant Temple with their information.