What exactly do you mean by popular? Who more people like? Who more people just know who they are? Also, are you referring to among just comic fans or the general public at large? You need to be a little more specific.
Hulk. He's been featured in the media more frequently with his old show with Lou Ferrigno and stuff like that and j had Hulk Hands toys when I was a kid, not Mjolnir. Hulk hasn't had a movie in seven years though