Aside from those characters who’ve been confirmed, it’s easy to assume that there are more surprises in store.
With 13 episodes in this final season, there’s more than enough time for old friends and enemies to come through for a final hurrah.
HYDRA’s presence could even indicate the return of faces like Arnim Zola, who Toby Jones briefly reprised on Agent Carter. And if we’re dancing on the line of both hero and villain, who wouldn’t want to see one final appearance from Brett Dalton’s traitorous Grant Ward?
August Richard’s Mike Peterson/Deathlok, a veteran character, seems like a perfect candidate.