Unforgivable villains vs forgivable villains

In the anime world, there are two distinct types of villains. Those who's actions are bad, and harmed a lot of people, but they have a chance to rehabilitate and repent for what they've done. They are the forgivable villains, and in most cases anime antagonists fall into this category. However, there are also extremely vile, evil to the core, abhorrent villains who are incorrigible and do not repent for their actions. Which anime antagonists do you think fall into either of the categories? Share one of each, or more, below! 

Personally I believe Itachi, Orochimaru, and Pain are the forgivable ones, and Obito, Madara, and Kaguya are the incorrigible ones. Naruto characters are all that I can think of rn xD 😅. 

forgivable, i think in soujiro seta of rurouni kenshin, and the villian i think toguro of yu yu hakusho

hmm, for the forgivable ones, I am going with Obito Uchiha, Sasuke Uchiha, Griffith

for the unforgivable ones, Shou Tucker, Junko Enoshima, Bondrewd and, Overhaul

I disagree

Akaza

on what?

On Obito and Madara being unforgivable

When the creator said is everything Zetsu's plan, Akatsuki and the other villains became in forgivable ones

Meruem from Cazador X was the same concept of Perfect Cell but well done. I think is one unforgivable villain