Many Dragon Pokémon are pseudo-legendary or Legendary Pokémon. Partly because of this, Dragon Pokémon have the highest average HP and base stat total of all types.
Offense
In addition to HP, Dragon-type Pokémon have the highest average Special Attack of all types of Pokémon and fully-evolved Pokémon.
When Misty Terrain is in the effect, the power of Dragon-type moves are decreased by 50% if the target is on the ground.
As of Generation VII, there are 50 Dragon-type Pokémon or 6.2% of all Pokémon (counting those that are Dragon-type in at least one of their forms, including Mega Evolutions and Alola Forms), making it the third rarest type, tying with Fairy, only behind Ice and Ghost.
The user whips up a vicious tornado to tear at the opposing Pokémon. This may also make them flinch.
All details are accurate to Generation VII games. For details that have changed between generations, please see an individual move's page. Target data assumes user is in the lower left.
Introduced in the Dragon Vault set, previously many Pokémon in this set were listed as Colorless-types. Dragon-type Pokémon in the TCG are generally weak to Dragon and Fairy with no resistances. Dragon-type Pokémon can be strong against other Dragon-types, and there are no types that resist them.
Trivia
Generation V introduced the most Dragon-type Pokémon of any generation, with 10, and Generation II introduced the fewest Dragon-type Pokémon, with only one.
Generation IV introduced the most Dragon-type moves of any generation, with five, while Generation VI introduced the fewest, with zero.
The Dragon type is the only type for which a move was not introduced in Generation VI. This is also the only instance of any generation not introducing a move for a type after that type's introduction.
There are only seventeen Dragon-type moves, the fewest of any type.
The Dragon type also has the fewest number of non-damaging moves out of all of the types, with only one.
In Generation I, there was no way to do super-effective Dragon-type damage, since the then-only Dragon-type attack, Dragon Rage, always deals 40 HP of damage.
Also, for the same reasons, there was no way to get STAB from a Dragon-type move in Generation I.
In Generation I, no type resisted or was immune to the Dragon type, making it the only type to have ever had this distinction. However, there were no Dragon-type moves that utilized the standard damage formula in Generation I, making this a moot point.
It has never been possible for any Pokémon to have either a double weakness or a double resistance to Dragon.
Sinnoh is the only region without a notable Dragon-type specialist.