AceShowbiz - There have been some great villains in television history, but only a handful have single-handedly made their shows even better. A great villain can take an alright show and make it good, or it can take a good series and make it one of the best television shows ever made. Every good story needs a good antagonist, after all. This list will primarily be looking at television villains who joined a show later on, only to make it even more compelling.

One notable example is Sue Sylvester from Glee. While she was there from the beginning, it's no secret that Sue Sylvester was the best part of Glee. She single-handedly kept the show relatively grounded, acting as the perfect foil to the glee club and their antics. It's hard to imagine what Glee would have been without Sue Sylvester. She single-handedly gave the show drama and conflict. Without Sue Sylvester, Glee would have been a run-of-the-mill teen drama, and the only unique thing about it would be the fact that the characters sing.

Another iconic villain is Benjamin Linus from Lost. Lost was an instant hit in its first season, and Benjamin Linus played a significant role in its success. He brought a new level of complexity to the show, making it even more engaging and intriguing. His character added a layer of depth to the story, making Lost one of the most beloved and talked-about shows in television history.

These villains, among others, have made their respective shows better and more memorable. They have become an integral part of the story, making it difficult to imagine the show without them. Their presence has elevated the series, making them some of the most iconic and beloved villains in television history.