Are Psychic Types Weak Against?

Psychic Pokemon are weak against Bug, Dark and Ghost types.

What Pokemon are effective against Psychic?

The best counters to this hard-to-beat Pokemon (and other Psychic-types) are Mega Gengar, Shadow Metagross, Metagross (and other rock types), Mega Beedrill (paralysis), Shadow Mewtwo and Dialga, which have a good defense against psychic moves like Psyshock.

What is fairy weak to?

Fairy-type Pokémon are strong against Dragon, Dark, and Fighting-type Pokémon, but are weak to Poison and Steel types. With Fairy Pokémon's vulnerability to two different types of moves, there's a variety of counters worth picking if you're going up against Fairy types in your next battle.