Kellarn was an acquaintance of Irving Braxiatel. He was contacted by Braxiatel during the Fifth Axis occupation of the Braxiatel Collection. He was to pose as reclusive sculptor Leo Didas.
Kellarn was intercepted on the way, however, by a humanoid construct of the Axis. The construct killed Kellarn, and proceeded to the Collection to take his place. (PROSE: The Price of Everything)