Thor's divine lightning and Mjolnir overwhelm Venom in every dimension of this fight.
Thor is an Asgardian god with strength approaching the Hulk's, divine lightning that shatters planets, and Mjolnir โ a weapon that has hurt cosmic entities. Venom is a symbiote with roughly Spider-Man level strength and a critical weakness to sound and extreme heat. This is a severe mismatch.
Thor's lightning is both intensely hot and generates massive sonic concussions โ directly targeting both of Venom's primary weaknesses simultaneously. A single lightning strike would cause the symbiote agonizing pain and potentially separate it from its host entirely.
Mjolnir hits with force orders of magnitude beyond Venom's durability. Even without exploiting the symbiote's weaknesses, Thor's raw physical power dwarfs Venom's. The symbiote's shapeshifting and tendrils are versatile but meaningless against someone who punches with planet-shattering force.
Thor's lightning directly exploits both of Venom's weaknesses โ extreme heat and sonic concussion. Mjolnir hits with planet-shattering force, and Thor's godly durability makes Venom's attacks harmless.
Venom's symbiote provides shapeshifting, regeneration, and versatile combat tendrils. In theory, the symbiote could try to bond with Thor, gaining access to Asgardian power.
Thor wins decisively. His lightning perfectly counters Venom's symbiote weaknesses, and his raw power operates at a tier that makes Venom's physical abilities irrelevant.
Thor (Norse) also fights
Venom also fights