6. Robin Arryn and the Starks
When he last saw Robin Arryn, he was still an immature boy (well, immature young man now) easily manipulated by the now dead Petyr Baelish into sending his army to the North to rescue Sansa Stark from the Boltons at the Battle of the Bastards. We haven’t seen him since. With his Knights of the Vale a vital part of the war effort, might he show up at Winterfell?
If so, I’d be interested to see him interact with the Starks. Years have gone by since his coddling mother Lysa Arryn died. Perhaps he’s grown up a little since then? Would he have the good sense to side with his cousins in the war against the dead. Or might he be mad at them for killing his beloved Uncle Petyr, who gave him a falcon once. Robin’s a bit of a wild card.
Ultimately, Robin’s role is pretty minor and he might not show up at all. If he does, I’m curious to see what sort of Robin Arryn we’re dealing with.