So I found out that once you rename them, your child can start building a relationship with them, and once they become Good Friends they will open their eyes! I had always known that they're eyes open I just didn't know how lol, but now I do and you do too! I had also noticed that while my household was asleep, I would catch a glimpse of their eyes opening even before they became good friends, but since I was going at Ultra, I never was able to stop in time to really catch them in the act! Thought I would share this. Also! You get a +2(?) happy moodlet when you become Good Friends with them and interact with them.