Originally Posted by cherokeesam
Got a feeling that "The Other" from the Avengers movie was created to be the cinematic substitute for Mephisto. He's pretty much got that role covered already.
But i have the feeling though that were there actual interaction between Thanos and Loki, that Loki would be have been playing the part of Mephisto, the advisor / eventual turn-coat / betrayer. Because the Other is really a throw-away character, nobody cares if he betrays Thanos. Loki on the other hand has a name (not to mention the audience has a little bit of empathy for him) and him betraying Thanos and attempting to wrest the Gauntlet from him would be of actual significance compared to a nobody trying to do it.