Anime Villains That SHOULDN'T Have Been Forgiven

Alex and Richard of the Anime Egotists talk about the villains in anime who got off a bit too easy with their redemption! While some of these villains could've had a face turn in a natural way, they needed it to have been done way more effectively in order for it to work. Some of these guys deserved to meet their end as villains; not being given a warm welcome. Who are some villains-turned-heroes who you thought got off too easy?