One of my acquaintances is a Sierra. A person who can be cool at times, who can sometimes pretend to be your friend (when there's a party), but actually wouldn't give a damn if you died tomorrow.
My best friend's mother is a Ms. Flyer. A somewhat older person, very kind and has a similar voice.
I have a little girl cousin who is a Cera. I think those are pretty common.
My father would be a cross between Grandpa Longneck and rainbowface. Great wisdom, very competent, responsible, (too) lenient.