Gadren (gaDren[contested]) was a young Guildsman at the time of the Fall. When gas filled the Cavern, his father brought him, the rest of their family, and many other D'ni to live on the Age of Aridanu.
When Atrus visited Aridanu while searching for survivors during the First Restoration of D'ni, Gadren and the rest of those living in the village with him swiftly decided to relocate back to the Cavern and join the restoration effort. Gadren did not join the team that traveled to Terahnee. It is believed that he and his family moved once more to Releeshahn after Atrus and company returned from their journey to Terahnee, committed to creating a fresh start elsewhere.