Fire: Drogon
Poison: Toxic
Lightning: Azura
Ive: Blizzard
The Wyvern is a highly sought-after massive flying dragon that can overpower most creatures it faces. The deadly Wyvern, which is only tamable by stealing and raising as a baby, can be found in four varieities — Fire, Ice, Lightning, and Poison — each of which have distinct attacks.

Fire: Drogon
Poison: Toxic
Lightning: Azura
Ive: Blizzard
Fire: Scorpion
Lightning: Raiden
Poison: Reptile
Ice: Sub-Zero
Smaug
If ice: Avalanche
Spyro
Poison: Taco Bell, Venom, My ex
If female poison, Medusa
Lightning:Thor
Black colored fire: Alduin
Deathwing
Torch (fire)
Voltage (lightning)
Butcher (blood)
Prism (crystal)
Avalanche (ice)
Viper (venom)