The sixth generation of Pokémon games is here, folks. Pokémon X and Pokémon Y are available now, with a massive number of new pocket monsters to collect and force to fight to the death. It's a good time to be a gamer.
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In honor of the new games we wanted to revisit some of our favorite evolutions in the series. They include Pokémon that evolved into something they shouldn't have, that evolve in a strange way, or that evolved unexpectedly—or that we just really like. There are tons to choose from, but it wasn't too hard to narrow it down to these 20.
There are also plenty of crazy new evolutions in the new games—including a brand new type of evolution called the Mega Evolution. We've barely scratched the surface of what's in X and Y, though, so that list will have to wait for another day. Read on for our 20 favorite Pokémon evolutions.