The popularity of Norse mythology through Marvel has introduced a huge audience to names and concepts from the original sources. The original sources are significantly stranger and more interesting than the films suggest.
Most of what we know about Norse mythology comes from the Prose Edda and Poetic Edda — texts written down in Iceland in the 13th century by Christian scholars, primarily Snorri Sturluson, centuries after the conversion of Scandinavia to Christianity. This creates interpretive complexity: the texts preserve genuinely ancient material, but filtered through Christian-educated scholars with their own agenda. The Norse myths we have are not a direct window into pre-Christian Germanic belief — they're a curated, partially Christianized record of it.
The Norse cosmic structure is genuinely complex: nine worlds connected by Yggdrasil, the world tree, including Asgard (gods), Midgard (humans), Jotunheim (giants), Hel (the dead), and others. The giants — Jotnar — are not simply enemies but ancestrally related to the gods; Odin's own mother was a giantess. This family connection between the divine and the chaotic runs through the mythology in ways that complicate simple good/evil readings. Loki is blood-brother to Odin by oath, not just a villain who appeared — the relationship is constitutive of the mythology's structure.
Thor in the Eddas is a red-bearded, prodigiously strong god primarily concerned with protecting humanity from giants, heavily associated with thunder and agricultural fertility. He's the most popular god among ordinary Norse people — Odin was more the god of kings, warriors, poets, and the elite. Thor's mythology involves several explicitly comedic episodes, including a story where he crossdresses as a bride to retrieve Mjolnir from a giant who'd stolen it. The character is more interesting than either his medieval sources or his cinematic versions fully represent.
The Norse concept of cosmic doom — the twilight of the gods — is unusual in world mythology for its specificity and its tragic acceptance. Most of the major figures know the prophecy, know how it ends, and proceed anyway. The gods will lose; Fenrir will swallow Odin; the world will be destroyed. And then renewed. The cyclic element is often dropped from popular versions, which emphasize only the apocalyptic dimension.
Here's where I land: Read the Prose Edda directly. It's shorter than you'd expect and stranger and better than any adaptation.
From experience: Examining primary sources alongside modern scholarship reveals a more nuanced picture than popular accounts typically present — the reality is usually more complex and more interesting.
Historians at the American Historical Association emphasize that primary source examination remains essential to accurate historical understanding — secondary accounts, however authoritative, inevitably reflect the interpretive frameworks of their era and audience.
Historical interpretation is genuinely contested in ways that popular accounts rarely acknowledge. The sources that survive are not a representative sample of what existed — they reflect what was valued enough to preserve, which systematically skews toward certain perspectives and against others. Intellectual honesty requires acknowledging these gaps rather than papering over them with false confidence.