* The Last Picture Show (1971) - While not a traditional "killer," his character, Duane Jackson, is a sexually aggressive and violent teenager who ultimately commits a serious crime.
* The Fisher King (1991) - He plays Jack Lucas, a radio talk show host who inadvertently inspires a man to go on a rampage.
* Iron Man (2008) - Although not the primary villain, he plays Obadiah Stane, who is eventually revealed to be the antagonist and tries to kill Tony Stark.
There are other films where Bridges plays morally ambiguous characters with violent tendencies, such as Thunderbolt and Lightfoot (1974) and The Fabulous Baker Boys (1989). It depends on what you consider a "killer" role.