Originally Posted by BigThor
I don't think he was in the gray area at the end of THOR, people in the gray area don't attempt to kill an entire race and try to kill their brother out of jealousy.
No, he wasn't in the grey area at the end of Thor, but it was borne more from his madness than anything else. Also he was desperately trying to prove to Odin that he could protect Asgard from the Frost Giants, albeit by killing them all. In Avengers it would seem that Loki has fully embraced his dark side and is serving himself more than Asgard and Odin. Like I said, it's going to be interesting to see how Odin handles a less dependent, more aggressive Loki.