First let me tell that i´m not a big fan of the all two Ghost Riders, one good (Spirit of Vengeance) and the other bad (Zarathos).
It never made much sense, IMO, and it takes away a bit of the drama, IMO also.
I always had the feeling that, the writers themselfs, wanted so much to bring some excitment to the Rider (that was half dead at the time), that it ended being extremely confusing.
Not only of the reader, but for the rider itself.
So, some years ago, i came with, what i believe, is a very good origin to all of the Ghost Rider mythos.
It needs some work, like i said, i came up with that some years ago, but the essence is there.
One thing i must say, IMO, Ghost Rider is THE love story of the Marvel Universe..
In the dark ages, a woman, moved by her husband´s murder, for revenge and love, opened the gates of hell, by making a pact with the "devil".
She asked him to kill her husband´s murderers and so he did, but the price, was her soul.
He stripped her down of her flesh and turned her exactlt into what she had became a creature of revenge, a fire god...Zarathos, forever in torment, forever seeking punishment, a monster, the personification of love gone mad.
Mephisto released Zarathos into the world, and blood covered the land.
Many tried to stop it, all failed, and Mephisto laughed, seeing what is creation could do.
When the last army went to fight it, all died, except one, his name, Noble Kale.
Kale was a common man, a man of the people, without many goods, but with an incredible power, the purest love.
Noble loved his wife and kids more than life itself, and his family loved him back just as much, that was his power, that was his strenght, with that he feared nothing and could overcome anything.
For years they fought, light versus darkness, hope versus horror, love versus hate.
It wa a matter of time until Kale defeated the demon, and Mephisto knew that, so, he made what he believed would turn the tides of war, he killed Kale´s family.
He expect it to take him into the darkness of his soul, but he failed, Kale´s love was so pure, that, even in death didn´t stopped loving them and fall into revenge. Mephisto was losing. But the devil has always one last trick up his sleave.
He couldn´t touch Kale, but he could touch Zarathos, so, he changed the "rules of the game".
In the last battle, when Noble defeated Zarathos and plunged his sword into his chest, insted of killing the monster, they both amalgamated, giving birth to an all new creature.
A mindless creature, driven by impulses and urges, driven by the revenge and punishment of Zarathos, and by the love and righteousness of Kale, so, he just took vengeance to the ones that deserved it, a creature made of the bones of Kale and the fire of Zarathos, his name would became lengendary, but also something of a folklore, he was the Ghost Rider.
I still don´t know how to bound him with Blaze, but i do know that there would be several GR through out history and he would be something of a ghost story.
So, what do you think?