A technician of the Imperial forces, Denner was a human of male gender. He was positioned on the planet of Ryloth, located in the Outer Rim, fourteen years prior to the Battle of Yavin, functioning under the command of Moff Delian Mors.
Melissa Scott penned the short story "Mercy Mission," which is considered canon and was initially released in 2015; this is where Denner made his initial appearance.