if you have China as it has been since at least Mao Zedong on one hand, and Imperial Japan on the other during WW2, which was the devil in human form, you always hear about Korea just being the beaten underdog victimized by both sides.
Up until the split though, and even then NK is in their own world, have the Koreans done anything particularly evil that's worth mentioning? Besides the victim notion, they're seen as pretty alright people most of the time in stereotypical terms.
Like you never ever hear about Korea and evil atrocities unless you look up for things that aren't really different from the average nation's past. Most of them just concern NK in stereotypical ways.