Cadet Sxerks is a mentioned-only character in Wasteland 2.
Sxerks was a Desert Ranger and had reached the rank of cadet when he was killed. He died sometime before Team Echo was assigned the job to locate the mystery signal threatening the Rangers in 2102. He was buried outside the Ranger Citadel.
The character is a reference to the real-life person who goes by the name "Sxerks" and is a moderator of inXile forums. He is also an administrator off both Wasteland wikis on Fandom and Gamepedia.