10 Times Supervillains Were HUMILIATED By Regular People
2. Fin Fang Foom Is Defeated By A Man With A Leaf - Strange Tales #89
As a colossal alien dragon, it'd seem almost definite that Fin Fang Foom required something pretty major to defeat him - like a cool sword, or some kind of ancient artifact.
But instead, we learn in Strange Tales #89 that Foom has one particularly interesting weakness: a leaf. To be specific, a 'sleep-inducing herb' found only in China, which is wielded by a young teen named Chan Liuchow in order to knock Fin unconscious.
Exactly how Chan knows that this one particular herb is capable of putting a ten-ton space lizard to sleep is unclear, but what is clear is that it works all too well.
While it's initially confusing that such a huge weakness of Fang's appears to have never been shown again, as Marvel likely retconned it so the villain couldn't be taken down by anyone with herbology training.