Caroline Forbes:In The Return: Nightfall, it is revealed that Caroline is pregnant with Tyler Smallwood's unborn twins but Tyler does not know about this. At first, it was suspected that Matt Honeycutt that was the father of Caroline's unborn children but it is confirmed that Tyler is the real father. Because Tyler is a werewolf, it means that the babies are hybrids, being half human, half werewolf. Therefore, both unborn children are carrying the werewolf gene and could possibly change into werewolves in the future.:O

Tyler Smallwood:Tyler eventually develops a relationship with Caroline Forbes later on in the series. He is also the unknowing father of Caroline's unborn babies at the end of The Return: Nightfall.

oh btw in the novel it felt like both these characters were quite evil....but the series is quite different ...........cause it shows caroline as a good person and tyler isn't that bad either.....i don't wnat much of the novel's plot in the seroes but i surely want caroline to end up with tyler and be pregnant with his child(/children) :D