Jack Frost is a recurring demon in the Shin Megami Tensei series, known for his iconic appearance as a small, snowman-like creature with a jester's hat. He is characterized by his playful and mischievous personality, often uttering his signature phrase, 'Hee-Ho!' Despite his cute appearance, Jack Frost can be a formidable ally in battles, possessing ice-based abilities that can freeze enemies. In the series, he often serves as a mascot and embodies the lighter, whimsical side of the otherwise dark and complex themes present in the games.