Thanos is a big surprise for me, as I figured that character was really obscure in comparison to villains like Loki and Red Skull. And this whole altering of the Skrulls for legal reasons, wtf is that all about? If FOX owns the right to depict Skrulls, than pay them to use that license. Why cut corners like that if they're a major plot point?

Same reason why Marvel hasn't gotten Fantastic Four back. Fox is charging an STUPID amount of money to sell the licenses back to Marvel. I honestly do not blame Marvel for not giving in. Sooner or later Fox will realize that they won't make anymore money off of FF and should honestly just sell it back for a fair price. But hey, money runs everything, right?

Thanos appears in Super Hero Squad so he isn't as obscure as all that.