FALL OF THE REPUBLIC
With the Empire seeking to fight corruption and restore the rule of law in the galaxy, Yularen traded his naval career for a position within the Imperial Security Bureau, ferreting out sedition in the Senate. As a colonel in the ISB, he was appointed to the Death Star, becoming part of its command hierarchy under Grand Moff Tarkin.
Yularen was called in by Grand Admiral Thrawn to lead the search for a rebel spy, code name Fulcrum. The military veteran was reconnected with Agent Kallus, one of his star pupils, aboard Thrawn's command ship. Little did Yularen know that Fulcrum was actually Kallus, a truth that surprised him once Thrawn deduced the traitor's identity.