Cryptic Tales - Name

He's a man wit the wings
he's a bird with the fins
I can't tell what you'll see
When you meet him
He looks different for everyone
When I saw him for the first time
He was a book which had
The same word written on each page

...This is only one of his names
If you see him you'll find
Your own name for him

He hates everything
That doesn't belong to him
He lives in a beautiful valley
And causes troubles everywhere

We put the dog's jaws aside
And when we set it free
A terrible sound echoed
It was the sound of death

A huge black feather
Wrote something on the sky
Tomorrow the final battle
Will be done

We put the dog's jaw aside
And when we set it free
A terrible sound echoed
It was...

...This is only one of his name
If you see him you'll find
Your own name for him