User blog comment:CNBA3/Fairy Tail Zero 6 review/@comment-25572451-20141217184629/@comment-9595671-20141222064315

Agreed, here's four things I've noticed relate to the question on Zeria's status.

1. Mavis has been shown to see, hear and even feel Zeira. And at the same time no matter how many times I re-read a chapter or re-watch an episode, I've never seen anyone actually make contact with Mavis' ghost. I think the fact Zeira's touch can be felt is an important comparison.

2. With Mavis' ghost form it was due to the Fairy Tail guild mark that her guild could see her. There's nothing that Mavis has that the others don't that lets her only see Zeira.

3. If she was just an illusion made by Mavis, then when the Blue Skull leader erased all her soldier illusions then Zeira herself would have been effect by it. But she wasn't erased, she actually pulled Mavis away.

4. I re-read chapter and I noticed this, Precth said "all we have to show for it are a pair of unreliable brats" to Warrod, the fact he said pair means he can see Zeira.

So I don't think she's been unseen by the others actually, I've seen instance of anime, games, and even some other manga where errors have been made. So I think scenes that make her seem not real might have been possible writing or story errors. (Like they forgot to draw her or show she was in front of the others)

In fact for those who read the Nirvana arc in the manga before the anime, I think you can all remember that Racer actually died during the bomb scene. The anime changed it to Lyon saving both of them from it to better explain how Lyon's survived, which by extension gave Racer "alive" status to make his appearance Key of the Starry Heavens arc.

So I think she's pretty much alive, and by extension taking the Fairy Tail founding picture like Bato thinks.