Sonic's incredible speed and the sonic booms from his movement directly exploit Venom's weakness to sound.
Sonic the Hedgehog moves at faster-than-light speeds, generates sonic booms with his movement, and his spin dash creates devastating kinetic energy attacks. Venom is weak to sonic vibrations, and fighting an opponent named Sonic who generates constant sonic frequencies is a nightmare matchup.
Sonic's speed makes him unhittable by Venom's relatively slow symbiote tendrils. Venom's combat speed is roughly Spider-Man level โ superhuman but nowhere near Sonic's FTL movement. Sonic could land thousands of hits before Venom registers his presence.
The sonic boom aspect is critical โ every time Sonic breaks the sound barrier near Venom, the symbiote would experience agonizing pain from the sound waves. Sonic essentially weaponizes his own movement speed against Venom's primary weakness. Even without knowing about the weakness, Sonic's fighting style naturally exploits it.
Sonic's FTL speed makes him unhittable, and his sonic booms directly exploit Venom's sound weakness. His spin dash attacks deliver devastating kinetic energy, and his Chaos Emerald transformations elevate him to cosmic levels.
Venom's symbiote provides regeneration and versatile combat abilities. If Venom could somehow land a grab, the symbiote's strength could restrain even a fast opponent, and bonding with Sonic would create a terrifying fusion.
Sonic wins through speed and his natural exploitation of Venom's sonic weakness. The symbiote cannot survive prolonged exposure to the sound waves Sonic generates simply by moving at his normal speeds.
Sonic the Hedgehog also fights
Venom also fights