Fire: Scorpion

Lightning: Raiden

Poison: Reptile

Ice: Sub-Zero

Smaug

Spyro

Poison: Taco Bell, Venom, My ex

Fatalis, Safi'jiiva, Alatreon, Rathalos

If female poison, Medusa

Lightning:Thor

Black colored fire: Alduin

Any wings of fire character

Monstrous Nightmare (HTTYD)