Lead characters are extremely important for TV series, as they are the basis of the shows' storylines. However, to make said lead characters shine and make the storylines interesting, supporting characters must be introduced. Sometimes, those characters have a major impact on a series and even end up becoming leads. Just see how Ben Linus on Lost was set to appear in a few episodes, but ended up being so helpful to the storyline and loved (or hated) by the fans that he became an integral part of the series and is now a major player on the show.

That compelled me to make a list of new supporting characters who helped make their series better this season. Since my list only has 10 items and because I don't watch all current TV series, I will have missed tons of supporting characters, so feel free to add to the list by commenting below. However, note that I restricted my list to supporting characters that were introduced THIS season. So the Ben Linuses of the TV world are not on the list.