In the Walden Trilogy, we see a number of characters not found in the books: General Oreius in LWW, Asterius in PC, and Gael in VDT, to name a few. All were added to fill a perceived gap in the story after being adapted to screen. In LWW, Oreius was a more personal icon of the Narnian army and added a lot to the battle scenes. In PC, Asterius embodied the sacrifice of the trapped Narnians at Miraz's castle. In a movie with few female characters and no other young children, the addition of Gael ticked both of those boxes in VDT.

We're likely to see new additions in the upcoming Netflix adaptation as well, and probably considerably more if we're looking at a television series. Who should fill Oreius's horseshoes this time around? What about adding more friendly Calormene characters? How about an evil tree on the Witch's side in LWW? Or a naiad in the crew of The Dawn Treader? What new characters would would aid the adaptation without straying too far from the spirit of the story?