Can we see them on fallout 4 with dlc ? All treeminders is still alive (spoiler=if you dont burn harold on oasis quest) .Yes , they are little group but lHarold and Bob is older characters and they can tells something about the Great War.What can you say?

Is there a canon ending for Harold and the Oasis? That would make or break the chance of ever seeing Treeminders again.

My guess is we will not see them again.