Derwarn was a 24th century Angosian soldier who served in the Tarsian War. He was trained in the Wadfelk Ground Tactical Training Division.

According to Roga Danar's service record, trainee Derwarn was severely injured in a brawl with Danar. No formal charges were filed against either soldier for the incident.

In 2366, this individual was mentioned in Danar's military service records, which were accessible to the crew of the USS Enterprise-D via the Angosian senatorial database. (TNG-R: "The Hunted", okudagram)

This character was only mentioned in writing.
The individual is named after Deron Warner, editor at CBS Digital, who worked on the remastered TNG project.