Feldspar is a noble thief in the land of Zaron. He first served as a lieutenant in the PlayStation 4 Army under Ranger Stan Marshwalker and Princess Kenny. He appeared throughout Season Seventeen's Black Friday trilogy, consisting of "Black Friday", "A Song of Ass and Fire", and "Titties and Dragons".
In the game, Feldspar was a member of the Kingdom of Kupa Keep as one of The Grand Wizard King's three bravest warriors (the others being Tweek Tweak the Barbarian and Token Black the Healer), serving as an elite thief. He was broken out of detention by Douchebag, and from that point assisted Kupa Keep in the battle of the Giggling Donkey. However, Feldspar betrayed Kupa Keep and joined Clyde Donovan's Army of Darkness as his lieutenant, on the grounds that Cartman had no authority following Clyde's theft of the Stick of Truth. He attempted to defend Clyde's base from an attack by the Grand Wizard and The High Elf, but was defeated by Douchebag. He was not seen afterwards.