Adar was a young Brenari boy.
In 2375 he was one of twelve telepaths that looked to the USS Voyager for help in escaping the Devore Imperium, which persecuted them because of their telepathic abilities. Adar and the others were safely transported through a wormhole by using one of Voyager's shuttlepods following Voyager's evasion of the Devore.
He kept reading Neelix's mind and interrupting his telling of "Flotter, Trevis, and the Ogre of Fire" with the next thing Neelix was about to say, something the Talaxian gently chided him for. (VOY: "Counterpoint")