VW has sold three completely different cars under the Fox nameplate.
There was the Fox that most North Americans associate with the Fox name, which has produced from 1987 to 1993 and based off the Brazilian VW Gol.
Then there was the second VW Fox, which replaced the Lupo and was replaced by the Up!. Like the North American Fox, it was Brazilian.
And last, as well as the least known, the South African VW Fox. Similar concept to the Citi Golf, except it was based off the Mk1 Jetta instead of the Mk1 Golf. This one was not Brazilian.