Koraidon's Weaknesses

Best Counters

Koraidon is especially weak against Fairy type Pokemon, they will deal 4x damage to it!

The types that are strong against Koraidon are Fairy, Flying, Psychic type Pokemon.

For the best defense, Fairy types have very effective defense against Koraidon, and will be resistant to damage from Koraidon's STAB attacks:

Dragon and Ice types will also deal super-effective damage against Koraidon, but be careful using Pokemon of this type because they may also receive extra damage from some of Koraidon's attacks!

Weaknesses

Koraidon's type is Fighting and Dragon.

Koraidon is especially vulnerable to Fairy attacks, it will receive a super effective four times (4x) the amount of damage! Since Fairy type Pokemon are especially strong against Koraidon, you should attack with this type of Pokemon.

Koraidon has a weakness to Fairy, Dragon, Flying, Ice, Psychic types. These Pokemon types will be strong against Koraidon, causing Koraidon to take a super effective quadruple (4x) damage from Fairy type attacks, and causing Koraidon to take a super effective double (2x) damage from Dragon, Flying, Ice, Psychic type attacks.

Please keep in mind that Koraidon is resistant to attacks from Bug, Dark, Electric, Fire, Grass, Rock, Water types, and these attacks are not very effective and cause reduced damage, so they should be avoided.