The major character in this episode? Surprisingly, it’s Hervé. This episode was really meant to introduce his case a bit, and some interesting things are revealed about Lise. Still, it’s not yet clear why he killed the other four girls.
It seems that he and his family are different from normal humans. The episode starts with a flashback, in which his mother dies, and turns into one of the monsters we’ve been seeing. I think the creators were better off showing some of his experiences with his mother first, before they killed her. It would probably have made this scene more emotional that it is now.
In any case, he’s got a good reason to act as Lula’s antagonist. I’m not sure with how many they are, but his kind has the tendency to transform into monsters as soon as they die. Right now, his little sister and his cousin are about to suffer the same fate. It seems that his grandfather is in charge of the research, attempting to cure them, though Hervé is getting more impatient by the minute. He also starts singing, at one point. I really have to pity these voice actors. They’re really doing something they aren’t used to, but the effects are great.
Two other major characters in this episode were Claire and Kate. Claire seems to be the next one to break down, seeing as Rachel cooled down a bit. Right now, she’s starting to shout to random people as well, which made her lose her job. Kate, meanwhile, moves into the opposite direction. She’s actually getting active with her Grace-responsibilities again. It’s indeed a good way to distract yourself, but I do feel that this won’t last forever, and that she’ll have her time to break down as well.