Dragons are the most Badass Mythical Beasts, they can breath fire, they can fly, they can breath other stuff and their scales are extremely strong.
Phoenixes are amongst the strongest and most durable of supernatural creatures. They are quite powerful and almost impossible to kill.
The Giant Squid cannot destroy ships of the size Kraken can, in fact, they don't even come to the surface enough to do that.
It is a three head animal. Which scares people by seeing the three head of the Hydra.
The king of beasts and the sky. They are very handsome beasts and are equally proud. A griffin is definitely the best of all mythical beasts!
Unicorn horns are said to be harder than diamonds and unicorn tears are believed to have the power to heal both physical wounds and sorrows of the heart.
They possess enhanced senses of smell, hearing, and sight that are superior even to those of wolves, not just humans.
These things can kill with one glance, and are incredibly dangerous. I think it would make a cute pet.
Pegasus was an immortal, winged horse that sprang from the neck of the beheaded Gorgon Medousa (Medusa).
Leviathan is an amazing storm creatures. This is literally the nemesis of the Kraken, as I have heard they supposedly fight each other.