Here's an age old question...

Some ask if Adam and Eve had belly buttons. Well, last night - or, rather, this morning.. - I got to thinking about that question. But, not for Adam and Eve. Rather, for Arcane and White. Technically, they weren't born of a mother. They never had an umbilical cord from where a belly button would come from. As strange as it sounds, or to think about, they don't have bellybuttons.
This also leads me to think about a few others. Would Kalvin have a belly button? He was created from Rhia, but was never a baby in a womb. In fact, when his personality originated, Rhia was nearly three hundred years old. However, he was created to be a sort of mirror image of her. Though, thinking about that, he wasn't 'born' with all of her scars. So, perhaps he, too, doesn't have a belly button.
Do angels have belly buttons? Thinking about this logically, if God created them outside of a womb, no, they aren't going to have one. However, if an angel is born of a union between two other angels, and assuming they go through gestation and birth the same as humans, then yes, the offspring will have belly buttons. So, in this case, Romeo does not have one.
A tough one would be Seth and Zelda. They weren't 'born' as most children are, but rather they were extracted from Rhia through a magickal process in which they simply came into being. However, though the time was short, she was pregnant with them for a while. The question is, did they receive sustanance through an umbilical cord, or did Arcane and White simply sustain them while they were in the womb? This I'll have to come back to later.
Here's another one; the original elementals, including Rhayvin and Ivory, probably won't have one either, as God, too, created them outside of a womb.
I don't think there's anyone else. If there is, feel free to let me know. What a strange question it is, anyway..