If body black and blue fire:toothless

Female ice: Queen Snowfall.

If Female ice: Velkhana

Fire: Scorpion

Lightning: Raiden

Poison: Reptile

Ice: Sub-Zero

Smaug

Spyro

If black Fire Wyvern: Starlight

Poison: Taco Bell, Venom, My ex

Poison-Toxic Waste

Lightning:Thor