Add Astolfo is a unique and mysterious character from the anime series Lord El-Melloi II Sei no Jikenbo (The Case Files of Lord El-Melloi II). Add is not a human but rather a sentient Mystic Code, specifically a talking suitcase that once belonged to Waver Velvet (Lord El-Melloi II). Add provides comic relief with his sarcastic and witty personality, often providing commentary and advice to Lord El-Melloi II. Add serves both as a tool and companion, playing a supporting role in solving magical mysteries throughout the series.