There are currently 18 different types of Pokémon, each with unique strengths and weaknesses. These types include Fire, Water, Grass, Electric, and many others. Each Pokémon belongs to one or two types, which influence their abilities in battles and interactions with other Pokémon. Types play a crucial role in Pokémon battles, as certain types are strong or weak against others. For example, Water types are strong against Fire types but weak against Electric types. Understanding these relationships helps trainers strategize and choose the best Pokémon for each battle.