Board Thread:Manga/@comment-44086949-20191204145248/@comment-25933225-20191204161339

The character you're refering about was Mads Mikkelsen  Calvi. He was a general in the Marleyan army.

In my POV, I think that when he mentionned this, it has two purposes :

- In terms of storytelling, I think it was a red herring : at this time, we didn't know what was the power of the 9th Titan. Isayama probably wented to mislead us, thinking that the last Titan Power would be a Titan with wings, able to fly. And surprise : WarHammer can't even move too far from its spawnpoint !

- Within the universe, it just shows that Titans are still mysterious, and they're wondering about the possibilities of these beings. And it's a natural response to imagine such a Titan, to face the threat of flying machine attacking Marley.

However, I think it'd be hard to have a flying Titan. If we assume that one of the 9th was a flying Titan, it has to be one of the smallest. The Jaw Titan could be a candidate, but I still think it's too big. The biggest flying living creature that has ever existed on earth was a pterosaur, and it hardly was bigger than 100kg/220 pounds. And it needed to fly by jumping from cliffs, it couldn't even fly directly from the ground. Even if Titans are lighter than they seem to be, the Jaw Titan is far heavier than 100kg/200 pounds, especially as the human's weight needs to be considered. And I think flying would require a LOT of energy.

Now, about Eren's Titan... Well, he doesn't seem to have wings. Yes, we don't see his arms, but I highly doubt his arms transformed into wings, otherwise we would have seen them. And I totally wipe out the possibility of a third pair of limbs (as wings), as I don't think human brain could handle a new pair of limbs to control, and that would be too far from the original anatomy of a human. And also... Well, Eren is DAMN BIG XD. Even if he had wings, he's far too heavy to fly. He probably can't even move a lot (well, now he can't even move at all since he doesn't have muscles yet).

So, flying Titans, in my eyes, were just a red herring for the 9th Titans, and are not really plausible.