Ariton was a longtime member of the Riders, fighting the Zhentarim together with Randal Morn for a very long time. In 1369 DR, he was the second-in-command of the group and the leader of the cavalry. He was the only survivor on an ambush in which Randal was kidnapped by the Zhents.
Afterward, he keep control of the Riders and, with the help of Elminster Aumar and Lhaeo, recruited some adventurers to find his leader. Ariton commanded the last battle against the invaders in Dagger Falls and afterward he welcomed Randal back to the freed dale.