Pat and Sheena Wheaton say they will get around the decision by the Registrar of Births, Deaths and Marriages by officially naming their son Superman but referring to him as 4Real, the New Zealand Herald newspaper has reported.
The Wheatons decided on the name after seeing the baby for the first time in an ultrasound scan and realizing their baby was "for real."
They decided 4Real was the best way to write it, but the name was rejected because the registrar said a name had to be a sequence of characters.
Pat Wheaton said he was considering appealing against the decision through the courts, but whatever happens he won’t be budged on his choice.
"No matter what its going to stay 4Real," Wheaton told the Herald, "I’m certainly not a quitter."
A spokesman for the Department of Internal Affairs, which operates the registry told the Herald discussions with the Wheatons about their son’s name were continuing.
The baby is now two months old, after the Wheatons first applied to register his name in later June.