Russ, you could name him Gnarly Kuna Dude and just call him Kuna for short.
I knew from the pictures the pup had to be a male just from the size of his head. Big heads seem to be a male thing, especially in Rotties, just kidding. The Rott we use to have was a female and her father was huge, when he stood on his hind legs he had to over 6 foot and his head was bigger round than a basketball. I am not a big dog lover but Max was such a sweetie.