Fire: Scorpion

Lightning: Raiden

Poison: Reptile

Ice: Sub-Zero

Smaug

Spyro

Fatalis, Safi'jiiva, Alatreon, Rathalos

Poison: Taco Bell, Venom, My ex

If female poison, Medusa

Monstrous Nightmare (HTTYD)

Lightning:Thor

Any wings of fire character

Black colored fire: Alduin