10 Most Powerful Beings Spider-Man Has Defeated
1. Graviton - Web Of Spider-Man #64-65
It doesn't get much more powerful than a villain who can CONTROL. GRAVITY.
Graviton is a lesser known Avengers villain who, despite having the personality of a wet rag, has one of the most devastating superpowers in the Marvel universe. The cosmic force keeping us glued to this spinning ball of dirt and water is his plaything, allowing him to increase or decrease the mass of any object he chooses, throw people around like they're made of cardboard, and generally be a villain you do not wanna mess with.
Graviton has actually tangled with Spidey on more than one occasion, the first time being a sound defeat of the wall crawler because - again - guy who controls gravity. The second time, Spider-Man had the powers of Captain Universe, so he dropped Graviton like a particularly bad habit.
But this entry focuses on the third time, when Graviton (and all the other villains Spidey humiliated with said cosmic powers) learned he no longer HAD those powers, and proceeded to hit him all at once for payback.
This time, Graviton doesn't waste any time, nullifying Spider-Man's mass completely and sending him up into the stratosphere. Fortunately, Spider-Man managed to web onto a passing plane to keep him from going any higher, and when he got back down to Earth, he took down Graviton in one punch.
One punch? Really Graviton? See, this is why the MCU doesn't want anything to do with you.