7 Crazy Pokemon Origin Theories That'll Blow Your Mind

4. Butterfree Should Be Venomoth

From in-world probing to production mistakes made in the game's code. Butterfree is the evolution of Caterpie and Metapod, while Venomoth (right) is the evolution of Venonat. Based on that information, you'd expect Venomoth to have a dark purple colour and big, red eyes and Butterfree to be rather angular in design with round, pupilled eyes.

But that's not the case. In fact, they're both completely the wrong way round; going on looks alone, a Venomoth really should crawl out of a Metapod.

Given how Weedle and Beedrill are clearly from the same line this is a little strange. So what's up? It's long been assumed that at some point the sprites for the two characters got switched and the mistake was never corrected. They are, after all, both purple bugs with big wings. It may not be in-world, but it's a pretty shocking mistake that was made.

This isn't the only production mistakes have allegedly made it through to publication either; looking at Psyduck and Golduck, wouldn't it make sense for their names to be switched?