The news that Rhodey was secretly a Skrull left many Marvel fans totally shocked, with the obvious question being how long has this been the case? Was Rhodey a Skrull in Endgame? What about in Iron Man 2? How deep does this go?
Kevin Feige has been pretty oblique about the exact answer, but he did say that he likes the idea of fans going back and watching other Rhodey appearances with the knowledge that it isn't actually him.
“We like the idea of fans going back and watching some of the other appearances of Rhodey and realizing that that wasn't him.”
Fans have already started speculating about exactly how long Rhodey has been someone else. In the show's season finale, we see the real Rhodey and he isn't able to walk after being imprisoned in the Skrull compound. While it's possible that's the result of fatigue, some fans have another explanation.
Some people think that Rhodey was taken from the hospital after he was attacked by Vision in Captain America: Civil War, which explains why he can't walk in Secret Invasion. That isn't definitely the case, but it's certainly a possibility and one that would mean Rhodey didn't experience the events of Endgame. He might not even be aware that Tony is dead. All of that seems likely to be explored in more details when Armor Wars hit screens.