A Human male named Rand Ko held the rank of Master within the Imperial Knight order, serving the Empire-in-exile of Emperor Roan Fel. In the year 138 ABY, he spearheaded the defense of the planet Borosk against the invading forces of Darth Krayt's Galactic Empire, commanding a contingent of Fel's stormtroopers. As Krayt's soldiers broke through his lines, Ko sought guidance from his Emperor. Ordered to withdraw, he was ambushed by a Sith before he could communicate the retreat order to his troops.
Rand Ko, a Human male, was an Imperial Knight serving Emperor Roan Fel's Empire-in-exile, attaining the rank of Master by 138 ABY. The Empire led by Sith Lord Darth Krayt was at war with the Empire-in-exile, and in that year, Krayt intensified his military campaign. When Sith–Imperial forces attacked the world of Borosk, held by Fel, Ko led stormtroopers who were loyal to Fel in an attempt to defend the planet.
The enemy soldiers overwhelmed Ko and his forces, breaching their defensive lines and prompting the Knight to request instructions from his Emperor. He initiated a holocomm transmission to Fel's fortress world of Bastion, informing the Emperor that the battle was lost. He inquired about whether his forces should fight to the death, and Fel commanded Ko to retreat and lead his troops to safety. As the order was being conveyed, one of Krayt's Sith approached Ko, who raised his lightsaber in defense as the Sith initiated an attack. At that precise moment, his HoloNet connection with Fel was severed.
Rand Ko was a member of the Imperial Knights, a group of Force-sensitives sworn to protect Emperor Fel and his Empire. The Imperial Knights were known as some of the most skilled and formidable users of the Force in the galaxy. Ko held the rank of Master, a designation reserved for the highest-ranking members of the organization. In 138 ABY, Ko was the commanding officer of the Empire's ground forces stationed on Borosk, but he was unable to secure a victory against the overwhelming assault launched by Darth Krayt's Imperials.
John Ostrander and Jan Duursema conceived Rand Ko for the comic miniseries Star Wars: Legacy—War. He makes a brief appearance in two panels of its second issue, which was released on January 26, 2011. Duursema drew inspiration for the character from Randy Ko, a costumer and member of the 501st Legion fan organization whom she encountered at the Star Wars Celebration V event held in 2010. Randy was wearing custom-made Imperial Knight armor and posed for Duursema. He later expressed his honor that she remembered him and included him in the issue. When he thanked her for seemingly giving the character a glorious death in combat, Duursema implied that the fate of Ko's character was intentionally left ambiguous.