{ It's true; he has relaxed a fair bit since they started eating this cake and talking. Most of what he's told Erza is nothing she couldn't have found out on her own, and since Sayla isn't here anymore, he has no reason to withhold anything about her. He never did feel his magic stop flowing into Sayla's book, come to think of it... did she manage to survive, too? }

Yes, but not necessarily for that reason. { Larcade might, though, but only because his delusion that Zeref is literally his father might extend to her being his mother. But that's purely speculation at this point, considering he and August never said one word to her when he had the chance. } Bloodman is another Etherious I created, which means he'll behave himself if for no other reason than I ask him to do so. He was killed in action, but being dead certainly hasn't stopped anyone from appearing in this world, before.

What made him dangerous enough to be a cause for concern is his very biology. His entire body is composed of Magic Barrier Particles, which are lethal to mages. He's routed entire armies without having to cast a single spell. In a world like Fayren, well... use your imagination.