Kirak Infil'a

Weapon of a Jedi
Like all Jedi, Kirak Infil'a constructed his lightsaber as part of his Jedi training. When Darth Vader came looking for Infil'a following the Purge, he killed the Jedi and took the saber as part of a trial set by Emperor Palpatine. Its kyber crystal was bled by Vader to use in his own Sith lightsaber.

Appearances
Darth Vader: Dark Lord of the Sith (Comic)