The V's real appearance is only unveiled once, at the very end of Season 2.
As with the original "V" franchise, this rebooted version was cancelled prematurely, so the last show of the series is an unresolved cliffhanger.
This final episode raises some interesting questions and fan theories about how the series story plot would have continued in season 3 onwards, and exactly why the Visitors had arrived, if it was more than bliss, breeding,etc.