Ou Peng was from Huangzhou, Huguang. He once served as a military officer, but offended his superior and was afraid of being punished, thus he resigned and left. He was tall, muscular and walked at a fast pace. Thus he was nicknamed 'Golden wings brushing against the clouds' (摩云金翅).
Eventually, Ou Peng became a bandit at Huangmen Mountain, along with Jiang Jing, Ma Lin and Tao Zong-wang. After the Liangshan heroes had stormed the execution ground in Jiangzhou and rescued Song Jiang and Dai Zong, they passed by Huangmen Mountain on the way back. There, Ou Peng and his friends stopped Song Jiang and wanted to join the Liangshan band.