10 Worst Characters On ER

Poor Lucy didn't last very long did she? Introduced as a leading character in season 5, Knight was rather unceremoniously let go in season 6 when an escaped psychiatric patient savagely stabs her to death. It was a seminal moment in the series and the first time a main cast member suffered the shock horror of being killed off.

Lucy's not a vile figure like many of the entrants on this list. In fact, she's really nice, one might say too nice. Severely lacking in any standout personality or storytelling, Lucy is often guilty of the worst TV sin there is: being boring.

Actress Kellie Martin felt the same way, even bringing her concerns regarding Lucy to the producers. With everyone accepting that the character simply wasn't working, the decision to kill her off was agreed upon and Martin was sent packing after one of the show's more disturbing moments.

Ultimately, Lucy Knight became far better remembered for her horrendous death than anything she did in life. A disappointing outcome for all involved and one that probably could have been avoided with a little more attention to character development.