Regidrago's Weaknesses

Best Counters

The types that are strong against Regidrago are Fairy and Ice type Pokemon.

Fairy types have a special advantage because they are immune to Dragon type attacks!

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

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

Weaknesses

Regidrago's type is Dragon.

Regidrago has a weakness to Dragon, Fairy, Ice types. These Pokemon types will be strong against Regidrago, causing Regidrago to take a super effective double (2x) damage from attacks of those types.

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