Mr wyvern

Fire: Scorpion

Lightning: Raiden

Poison: Reptile

Ice: Sub-Zero

Smaug

Spyro

Meleys,Vhagar,Vermithor,Caraxes,Seasmoke,Balerion,Meraxes,Dreamfyre,Sunfyre,Moondancer,Vermax,Arrax,Sheepstealer,Tessarion,Silverwing,Grey Ghost,Cannibal

Poison: Taco Bell, Venom, My ex

If female poison, Medusa

Lightning:Thor

Black colored fire: Alduin

Torchy blaze