Surprise Heroic Assistance

The Avengers and the Guardians of the Galaxy are indeed mighty, but, as we’ve already mentioned, it’s unlikely that – even collectively – they’ll be able to scratch the almighty Thanos when he’s wielding the Infinity Gauntlet. So they’re going to need some extra help.
That extra help could come in the form of a number of other groups; the Inhumans, the Defenders, and/or the Agents of S.H.I.E.L.D. – any of which would be awesome to see.
The Inhumans are no longer starring in their own Phase Three movie, so they could appear in the Infinity War movies. The Defenders are coming to Netflix, so they might make the jump to movies. And the Agents of S.H.I.E.L.D. need a movie appearance, so 2018 or 2019 would be well overdue for them.
Now, let’s look at some additional help that would be even more surprising.
