The Norse and others were pretty big on avenging feuds and avenging slights, but they still believed one could be redeemed or humbled.

Was there ever a culture so spiteful and choleric the very idea of redemption doesn't compute and torture and cruelty is entirely justified if done against those who caused a wrong?

Like basically I'm trying to come up with ideas for a fantasy alien race, but I want to see if there are examples from history