What's the worst example of a badass who got wimpified?S

This happens all the time. A character, or an entire civilization, are built up as being unstoppable and crushingly awesome. And then... the enwimpening. The most unstoppable force in the universe has a really simple weakness. Or the greatest fighter turns out to crumble under pressure. What's your least favorite example of a powerhouse being depowered?

Share your choice below — and as usual, please include a picture so we can mock the once-mighty hero, villain, monster or superweapon.

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