Ralph Macchio's portrayal of Daniel-san in "The Karate Kid" series evolves from likable to suffocatingly gregarious, making him less sympathetic over time.

Joe Pesci's character Leo Getz in the "Lethal Weapon" sequels devolves into shtick, overshadowing his initial comedic twist and becoming a low point in Pesci's career.

George Lucas' writing and Hayden Christensen's portrayal turn Anakin Skywalker into a pouty, unsympathetic character in the "Star Wars" prequel trilogy.

Vivien Leigh's iconic performance as Scarlett O'Hara in "Gone with the Wind" challenges sympathies due to the character's detestable traits, despite Leigh's brilliant acting.

John Heyl's portrayal of Phineas in "A Separate Peace" reflects the character's obnoxiousness from John Knowles' novel, making him repelling to the audience.

Shia LaBeouf's portrayal of Sam Witwicky in the "Transformers" series is exhausting, with the character's constant distress overshadowing the giant robot action.

Kate Capshaw's portrayal of Willie Scott in "Indiana Jones and the Temple of Doom" is grating, evoking exasperation from both the audience and Harrison Ford's character.