The Rarest Pokemon Type Combinations

gamerant.com:

Something that could be argued as important to the Pokemon series as the creatures themselves is the types that classify them. Game Freak's most famous IP has always been known for being a more complex version of rock-paper-scissors featuring many different elements to change things up. In order to keep the game balanced and interesting, some Pokemon have more than just one type. Plenty of these powerful critters have two types to their name, and some are much rarer to find in the series than others.

When it comes to competitive Pokemon, type combinations are incredibly important as it gives certain creatures vastly different weaknesses and advantages based on what types they're up against. It's also important for a full team of six critters to have full coverage over any weaknesses to work properly, among other things that make the competitive play in the games so interesting. Some dual-type Pokemon have such incredible coverage that they've risked changing the game by just being added, such as Hisuian Zoroark and Zorua.

Pokemon Fan Shows Off Their 'Pokedesk'

In order to figure out how rare certain type combinations are in Pokemon, fans should keep a few things in mind. While there are just over 900 Pocket Monsters as of this writing, tons of them share the same type combination with other creatures. Due to this, there are quite a lot of type combinations that only have one creature, or one evolutionary line, to represent them. Some of these critters are much easier to find than others, such as Bibarel, the series' current only Normal/Water Pokemon.

This situation is only amplified by how some Pocket Monsters won't be obtainable once the Nintendo 3DS eShop shuts down next year, and Pokemon Bank will only be accessible to