* Buffy the Vampire Slayer (1997-2003) as Cordelia Chase, a popular and initially shallow cheerleader who later becomes a strong and complex character.
* Angel (1999-2004), the spin-off of Buffy the Vampire Slayer, where she reprised her role as Cordelia Chase.
* Veronica Mars (2004-2007) as Kendall Casablancas, a wealthy and manipulative socialite.
* The Lying Game (2011-2013) as Rebecca "Becca" Sutter, a cunning and ambitious woman.
* The Expendables 3 (2014) as the character "The Girl".
Carpenter has also appeared in other television shows, including "Party of Five", "The Tick", "Law & Order: Special Victims Unit", and "Supernatural".
In addition to acting, she has also been a voice actress in several animated series, including "Batman Beyond", "Justice League Unlimited", and "Teen Titans".
Carpenter has also been involved in philanthropic work, including supporting organizations like "Stand Up To Cancer" and "The Trevor Project".