Lang Wu Yao is a main character in the series Thunderbolt Fantasy, known for his mysterious and stoic demeanor. He is a traveling musician with a dark past, carrying a large guqin, a traditional Chinese instrument, which he uses both for music and as a weapon. Lang Wu Yao's abilities in both combat and music are extraordinary, making him a valuable ally. His complex character is revealed throughout the series as he becomes involved with the protagonist, aiding in their quest against formidable adversaries. His loyalty and hidden depths add intrigue to the story.