That was close.
For the whole series, the character played by Chris Noth was referred to as ‘Mr Big’ or just ‘Big’, with his moniker only being revealed in the series finale, seeing the name ‘John’ pop up on Carrie’s diamante flip phone.
In a recent interview the executive producer Michael Patrick King explained to Entertainment Weekly that they very almost didn’t reveal Mr. Big’s name. In fact, it turns out that the character didn’t even have a name until they wrote the series finale, with the idea added almost as an after thought.
‘In the last episode, in the last moment, I realised I had to say Mr. Big’s name and I just [wrote] John’, he explained in the video interview. ‘And then I told all the writers and they were like, “What the hell?” And I was like, “We have to say his name because now he’s real!”’
When asked ‘Was it always John?’ the SATC executive producer replied, ‘In my mind? No. He had no name. He was Mr. Big.’
Explaining his name choice he stated, ‘If I wanted to give him a name, I wanted to give him the most generic, American, almost pilgrim name.’ He continued: ‘There’s no spin, it’s just John.’
His full name, John James Preston, is revealed later in the spin-off films but to us he will always be Mr. Big.