1. Nikki and Paulo, "Lost"
When you think of pointless TV characters, these two should be the first ones that come to mind. And yes, they don't get to be separated. We always knew that there were other survivors of Oceanic 815 besides Jack Shepherd and Co. In response to fans wonderment of what was happening with the background island extras, the writers came up with the idea of Nikki and Paulo. They forced them on us without any formal introduction and the whole thing failed miserably. By far the most annoying characters on the show, these two quickly became universally hated by everyone. When their diamond thieves backstory was finally revealed, it didn't do them any favors. Thankfully, their flashback episode was also their last and it ended with them getting mistakenly buried alive by their fellow castaways. When a character's death by premature burial causes fans to rejoice, it's obvious they had no business being on the show in the first place.