Alagosa was one of the blue dragons charged with tracking the progress of the Focusing Iris as it was moved to a safe location. Along with Banagos and Teralygos, she discovered that something had happened to the escorts, and that the artifact had been stolen. She subsequently went with Banagos and Kirygosa to discover the escorts' fate. She was present when Kalecgos returned to the Nexus after the fall of Theramore.[1]
She can be found at Algeth'era Court in Thaldraszus.