Since the birth of their son, many people have been speculating about how the couple came up with the name Kai.
Although the name has various meanings in different languages one suggestion has been that the pair decided to call their son Kai after a character from the computer game Mortal Kombat which Wayne is said to be a big fan of.
Or of course they could’ve named him after Kerry Katona’s dog who's also called Kai, but hey who knows…