Thor is one of the most powerful gods in the nine realms, meaning the MCU is packed with references of Norse mythology. From Odin's crow informants to Thor's all powerful weapons, the MCU had a lot of help from ancient myths.
Elements of Norse mythology can be found hidden in the background or in plain sight, it just takes an expert to notice them right away. Take a look below and vote up the most interesting details below.
In Thor (2010), during Thor’s coronation you can see two birds perched over where Odin is sitting. These are Hugin and Munin, Odin’s ravens from norse mythology who are his personal informants. They are later seen watching over him when he is in Odinsleep.
The ritual to create Thor's new weapon goes wrong leading to a problem with the hilt. In Norse mythology, the ritual to create Mjolnir goes wrong leading to a problem with the hilt.
In Infinity War, Thor passes out leading to the axe Stormbreaker having no hilt at all, which Groot fixes. In Norse mythology, Mjolnir is intended to be a long hilt requiring two hands to use, like a battlehammer, but Loki interferes with the creation leading to the smaller hilt, which Thor decides he likes anyway because it means he can throw it.
In Thor: Ragnarok, Doctor Strange prepares to teleport Thor and Loki but first researches any "Asgardian modifications" that may be necessary. When he performs the portal spell he creates a Norse-style Triquetra/Triskelion.
When Hulk fights Fenrir in Ragnarok, this shot makes it look as if Fenrir is devouring the sun, as he’s supposed to during Ragnarok! Thought it was clever.