Jojen Reed
A solemn young crannogman of House Reed, gifted (and burdened) with green dreams that show him things yet to come.
A soul born at Greywater Watch, sworn to House Reed.
The fuller tale
Season Three
A boy from the Neck who sees things before they happen and has spent his whole life learning to live with that — greensighted, solemn beyond his years, and certain that Bran Stark is not merely hurt but meant for something the rest of the world has no word for yet. He and his sister Meera find Bran's party north of the Wall's shadow and simply attach themselves to it; Jojen does not ask permission because his visions have already told him he does not need it. He pushes Bran to stop mourning his legs and start learning what his dreams are for, however unwelcome the lesson.
Season Four
North with Bran through wolf woods, a burned mill, and Craster's Keep's mutineers, walking toward a vision he has had for longer than anyone around him realizes: himself, at the door of a cave beneath a weirwood tree, not walking back out. When the dead come for them within sight of that door, he does not run — he has already spent a season making his peace with this exact moment, and he holds the line long enough for Meera and Bran to reach the tree without him. He dies where his greensight always told him he would, which does not make it easier for the people who loved him, only easier for him.
How it ends for them
On the screen. Fell beyond the Wall (S4·E10)
The boy who dreamed the future knew he would not survive the journey north, and went anyway. Wights dragged him down within sight of the three-eyed raven's cave; his sister gave him mercy, and the children's fire took the rest.
In the show, Jojen dies within sight of the end of his own road. As the party crosses the frozen clearing before the three-eyed raven's cave, wights erupt from the snow itself, and Jojen — too weak by then to fight — is dragged down and stabbed, again and again, before the children of the forest can reach him. Meera gives her brother mercy with her own blade, and the children's fire-bombs take his body as the survivors are pulled into the cave he spent his last strength delivering them to. He knew, the scene is framed to suggest, and came anyway. In the books no such scene exists: Jojen Reed is alive in the greenseer's cave as of the published volumes — though so visibly failing, and so heavy with unspoken foresight, that readers have been braced for years.
Their chapters, book by book
A Clash of Kings 3 chapters that name them
A Storm of Swords 2 chapters that name them
A Dance with Dragons 1 chapter that name them
Where the page and the screen part
The tellings part company at the cave. In the published books Jojen is alive — drained, homesick and increasingly fatalistic in the greenseer's caverns, where his gloom has fed one of fandom's most notorious theories about what exactly goes into the weirwood paste Bran is fed; the books have confirmed nothing. The show settled his account on camera instead, at the cave's very threshold. It also aged both Reeds up and trimmed their folklore — the books' Jojen arrives wreathed in crannog strangeness, green-dreaming Winterfell's fall in detail (the sea coming to Winterfell, the drowned men in the halls) that the show never staged. Show Jojen is a gentle guide; book Jojen is that and something eerier, a boy the narrative itself seems careful around.
Their journey
Where the two tellings send them to the same place the road runs whole; where they part, the screen keeps the left and the books the right.