Torch (fire)
Voltage (lightning)
Butcher (blood)
Prism (crystal)
Avalanche (ice)
Viper (venom)

Drogon, Rhaegal, Viserion, Balerion, Meraxes, Vhagar

Fire: Scorpion
Lightning: Raiden
Poison: Reptile
Ice: Sub-Zero

Poison: Taco Bell, Venom, My ex

Smaug

Toothless (of lightning)-Quill

Kestrel

Spyro

(If fire) Bakugo

Poison wyvern: coronavirus