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 is the alter-ego of Craig Tucker. He appears throughout Season Seventeen's Black Friday trilogy, in "Black Friday", "A Song of Ass and Fire", and "Titties and Dragons".
In the game, Feldspar is 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 is broken out of detention by Douchebag, and from that point assists Kupa Keep in the battle of the Giggling Donkey. However, Feldspar ends up betraying 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 attempts to defend Clyde's base from an attack arranged by the alliance of the Grand Wizard and The High Elf but is defeated by Douchebag. He is not seen afterward.