Not in the movies. So what? Marvel is a wholly owned subsidiary of Disney, and the image above (with Loki wearing a Low Key shirt) is plainly from a Marvel co

Not in the movies. So what? Marvel is a wholly owned subsidiary of Disney, and the image above (with Loki wearing a Low Key shirt) is plainly from a Marvel comic (a little digging seems to indicate it's https://www.marvel.com/comics/collection/80467/loki_the_god_who_fell_to_earth_trade_paperback https://www.marvel.com/comics/collection/80467/loki_the_god_...). Edited to add: Note that I think there's very much a good argument to be made that this stuff does or should fall well in bound of what fans can do in referencing a work, I just think that "it's not even the same character!" is off base.