Pokémon come in one of 18 types that have strengths and weaknesses to all the others. Here's a handy guide on how types work.

The Pokémon franchise now contains nine generations of over 1,000 Pokémon across 18 different unique types. Those 18 base typings make for over a hundred combinations for dual types. However ...

Pokemon types evolve with each game generation, showing growth from 15 to 18 types over the series. Water-type Pokemon dominate single type, while Normal and Grass types lead the way in total numbers.