One actor playing two characters can be bad. One actor playing three characters, one of whom is morbidly obese, is just abysmal. See "Norbit" for reference. Good luck stomaching the (many) scenes in which Rasputia's zeal for sexual domination leads to a broken bed and a gasping-for-breath (not in a good way) Norbit.
Just his name sounds annoying. As the resident nerd and wannabe ladies man on the '90s TV series "Saved by the Bell," Samuel "Screech" Powers gave girls the creeps. He might have had a more endearing legacy had the actor who played him, Dustin Diamond, not amped up the "ick" factor as well. In 2006, Diamond released a too-dirty-to-describe-here sex tape entitled both "Screeched" and "Saved by the Smell."
8. Nikki and Paulo
Awkwardly introduced in the third season of "Lost" as if they had been there all along, Nikki and Paulo were supposed survivors of the Oceanic Flight 815 plane crash that was the catalyst for the plot of the show. They were clumsily shoehorned into major storylines, earning fans' ridicule. Eventually, "Lost" show runners, who realized that the characters were "universally despised," spent a whole episode exposing them as horrible human beings and then gruesomely killed them off by burying them alive.
9. Bella Swan
The heroine of the enormously popular "Twilight" series of books and movies has inspired as much hatred as she has devotion. The anti-Bella camp sees her as a terrible role model for young girls, in love with and constantly needing to be rescued by an aloof vampire boyfriend, Edward Cullen.
But popular culture is full of bad role models that make unforgettable and fascinating fictional characters. What makes Bella suck more than vampires is that she has little personality of her own and seems to live only for Edward. In a world full of super-powered beings, she is defined by being clumsy and mooning obsessively over her man.
10. Poochie "Simpsons" characters are reliably hilarious and justifiably beloved, and Poochie, a cartoon skateboard-riding dog who said things like "Catch you on the flipside, dudemeisters," was more of a meta commentary on marketing-department meddling than a truly bad character. In season 8, Poochie was added to show-within-a-show "The Itchy & Scratchy Show" at the request of the producers, who thought the cartoon was getting stale. And in a poke at the power of "hardcore fans," Poochie's unpopularity got him killed off after only his second episode, to the dismay of Homer, who was voicing him.
Who else belongs on this list? Share your thoughts in the comments section below.