Larxene's, of course, is weirdest, but I love it. I don't why, I just do.
Her antennae, goodness, her antennae, is one of those hairstyle that you want to pull to see the reaction of said people. Probably be fried to death though, but...how I so wish that someone pulled Larxene's little hair fingers in CoM.
Though I agree about the rest of the hair, how can it stayed glued to her head like that? Spiky makes more sense because it still sticks out everywhere naturally, but Larxene can never pull that off wihout some serious gelling.
The hair matches her though, you know, Savage Nymph. Though I don't know what Nomura was thinking when making her hair. Did he see a bug when modeling Larxene? Was it her code name? Was it her element?
Was it Pikachu? *_*