Rin Setsu A is a mysterious and cunning protagonist in the puppet fantasy series Thunderbolt Fantasy. Known for his intelligence and silver tongue, Rin is a master strategist who often manipulates situations to his advantage. Despite his ambiguous motives and mischievous personality, he aids the main characters on their journey, often acting as both an ally and a trickster. His enigmatic background and ambiguous morality make him one of the most intriguing and unpredictable figures in the series.