Gao Gan
After Yuan Shao's death in 202, Gao Gan gained support from Guo Yuan and the southern Xiongnu leader Huchuquan to counter Cao Cao's advances into northern China. However, he decided to surrender to Cao Cao in 203 after Guo Yuan's defeat and after internal conflict broke out between Yuan Shao's sons Yuan Tan and Yuan Shang. Cao Cao allowed him to continue serving as the Inspector of Bing Province after his surrender.