Pullman

Pullman is the mysterious enemy of Tom Taylor. He is seemingly immortal and has been a part of the Cabal that has been attempting to affect the world through literature for centuries.

He was involved in the first known recorded story, 'The Epic of Gilgamesh" making him at least 4800 years old and is probably even older than that, since in the Gilgamesh story he is known as immortal and one can therefore conclude he has lived for some significant time before that.

His immortality seems to spring from the Leviathans likeness to him which has led him to the conclusion that the Leviathan itself must die in order for him to do, for which having been alive such a long time is something he's longing for.