Residing in the Demon King's castle, Quilladillo serves directly under Demon King Twilight as a primary henchman. His porcupine-like appearance features multicolored hair and black eyes, and he is typically clad in armor. Within the demon army hierarchy, Quilladillo stands among Twilight's trusted subordinates, frequently engaging in castle operations and responding to incidents instigated by Princess Syalis. His role centers on supporting the Demon King's activities alongside fellow henchmen including Frankenzombie, Minotaur, and Castle Goblin Grunt.