Liu Tze Long, also known as Lesion, is a fictional character from the video game series Tom Clancy's Rainbow Six Siege. He serves as a defender operator known for his tactical prowess and strategic use of Gu mines. Lesion is a meticulous and resourceful individual, often seen as a vital support character due to his ability to provide valuable intel and hinder enemy movements. With a calm demeanor and a sharp mind, he plays an essential role in fortifying defenses and ensuring the safety of his team.