Board Thread:General Discussion/@comment-10048743-20160208024352/@comment-27082610-20160218230852

Otherside86 wrote: Here's what I would like to see in Volume 4. Emerald's conscious finally caught up to her. So she snuck into the house when Yang's all alone, knock Yang out with anesthetic, and surgically give her a new robotic arm. Being around Mercury alot, she would know how to.

I'm sorry, but just being around someone with and advanced prosthetic like that doesn't mean you're going to be able to be able to install one yourself. It's not like we saw her being the one performing maintenance on him.