The Imperial Knight lightsaber was first mentioned and pictured in Star Wars: Legacy 0, a June 2006 preview issue of the upcoming Legacy comic book series. As recurring characters in Legacy, Imperial Knights went on to frequently wield their lightsabers throughout the series’ fifty-issue run, as well as in its followup miniseries, Star Wars: Legacy-War. Further details on the weapon and its method of creation were revealed in 2009’s Legacy Era Campaign Guide, which was also the first source to explicitly name the weapon as the “Imperial Knight lightsaber.”
In the Legacy comics, the lightsaber’s blade is consistently depicted with a white hue. The Legacy Era Campaign Guide and The Complete Star Wars Encyclopedia similarly describe a white blade, but Threats of the Galaxy mistakenly identifies the color as silver.