Frankie is a nickname for Frankenstein. She has a bunch of names and it matters on how long people have known her, or what happens to be her name for the day. She responds to all of the following and they're used often: Frannie, Francis, Stein, Steiny, Steiny-hiney, and trouble.

Riley only really has one: I don't know why, but I always call her little one and that's been shortened to LO, pronounced low.