Doug is brought back to life in a utopia meant for mutants to live in safety (he ignores the little voice in the back of his head saying that utopias are doomed to failure).
He is not a dying boy who jumped to take a bullet for his friend (his friends have grown up without him).
Doug joins his team and invents a language for this new mutant (ha) society.
Doug dreams.
He is a young boy (a different boy) doing his best to survive in a big city that holds no love for him (King's Landing is cruel to orphaned, urchin children). He learns a trade, and becomes a dyer's apprentice. Working to color cloth has left him with dyed hands as well (he earns his name; he does not inherit it from family).
The boy with the green hands steals bread (he was hungry; apprentice dyers do not earn much), and he is forced to join the Night's Watch. The group he travels North with has some other boys his age.
He knows Hot Pie already (Arry and Gendry come later).
((In his dreams, Doug recognizes the small wisp of a boy with the skinny sword and his friend's face--realization does not come until later))
Lommy (that is the name of the boy with the green hands) is young and foolish. When the group is ambushed, he runs to take the bull's helm (Gendry kept it close, and he wanted to see the workmanship of it). He does not know it, but this will be his undoing (he does not know it but dying in the other boy's place will save humanity).
Lommy has an arrow in his leg, and there is a soldier with his friend's skinny sword. He can't walk, and the soldier laughs (Lommy Greenhands dies choking on his own blood, drowning on land).
Doug gasps awake, and takes a moment to realign himself in reality (he turns on the lights, and his hands have no colored dye (Lommy Greenhands died a long time ago, and to Doug these are only dreams)).
(Doug talks to the girl he died for about the nightmares, later. She tells him Arry (the boy with her face) killed the soldier the same way the soldier killed the dream-boy.)
(He does not ask how she knows, nor does he allow himself to truly feel satisfaction.)
(After everything comes to light, he realizes Arry wasn't a boy at all (the girl his friend shares a face with is called Arya and they are one and the same. He thanks her when he is certain that he is the dream-boy. She tells him that because he died his friends were able to save the world (and oh, doesn't that sting; always the sacrifice, never the savior)))
(He sees how destiny crushes his friend underfoot, and regrets his thoughts; perhaps dying early was a blessing in disguise)