Who is Ross Robertson?

I just saw a man on Tv One claiming to be an MP called Ross Robertson. I can name every NZ MP since 1984 and have never heard or seen this man before so he is obviously an imposter. He purports to be a long serving Labour MP from Auckland, first elected 18 years ago in 1987.

Google returns zero hits for him, so he is obviously not real.

Can anyone cast light on who this alleged MP is?