User blog comment:Kajune/SPN's redeemed antagonists/@comment-1031724-20160604050455/@comment-1975828-20160607114742

So...if Lucifer's cruel, merciless and selfish nature is all due to the Mark, then how is Dean basically Dean again? Not trying to argue, but I find it rather confusing. I mean, Dean's squealing over a boxer in "Beyond the Mat", and while in other episodes he's rather sad and hurt, I contributed all that to Amara's influence over him, his "attraction" towards her.

I wonder what Chuck meant by "tainted".