Thread:Jester of chaos/@comment-27729149-20150602022947/@comment-4708882-20150816123841

With Thanos I have heard he did turn for a small time good as an attempt to redeem himself but later his lust for power returned and corrupted him again. I couldn't did a direct lin to the comics but here is a link I found saying it: there were some more sites but it is hard for to find and copy only the part of trying to find redemption before going evil due to me using my phone for now. That makes me want to say he actually is On & Off but I'll wait a bit before re-adding it.

With Light from what I recall it was the fact he started off Nobel intentions and only killed criminals (though that lasted I believe only a episode), went Good when he lost his memory and legitimately wanted to held catch Kira (not knowing the first was him) then once retrieving Death Note again and being crazy and it's both in story and outside theory that Death Note corrupts the user and makes their darkest aspects come to the surface. I think it was said by Ryuk but it's been a while.