Greeshen was guarding the Jedi Archives when the recently-unhinged Joosel Neteetret approached him. When asked to show his identification, Neteetret drew his lightsaber. Greeshen put up a fight, but was killed by the fallen Jedi, but not before sending out an S.O.S. to any available Jedi. This final attempt to stop Netreetret resulted in the Battle at the Jedi Archives.