grand-duc:

grand-duc:

So in Thor: Ragnarok, on Sakaar. Thor says he and Loki are brothers and Loki replies “Adopted”.

Let’s assume that got back to Valkyrie, so she knows they’re brother but that they are not blood related. And that is all she knows.

Now let’s further assume that Hela’s “You don’t look like him” had some truth to it and that Thor physically takes after Frigga. Meanwhile, Loki and Hela have the same coloring and general build, And Loki has Odin’s fast-talking. 

So what if, not knowing the particular of how Loki and Thor happened to become brothers, she’s assumes Thor is adopted one?

What if she doesn’t learn otherwise until some time into the trek to Earth?

Because  I can’t sleep anyway:

Valkyrie for what is probably the fifth time in as many days: “But are you sure he’s not the one who’s adopted?”

Thor getting seriously exasperated: “I solemnly swear on the roots of Yggdrasil that I am, to the best of my knowledge, The blood son of Odin and Frigga of Asgard.”

*a beat*

Thor: “… Of course 8 years ago I would have sworn the same thing about Loki.”

*Another beat*

Thor: “… And I would have called myself their firstborn. So I will grant that “to the best of my knowledge” may not be particularly reliable, but I’m not the one who turns blue.”

Loki, from the sideline: “That can be arranged.” *makes ominous gesture*