|“||I have everything I want, Damon. Or I'm about to. Once that last bell rings, this stupid town will go up in flames and everybody will go poof. Well, they'll burn alive first, but then their ashes will go poof.||„|
|~ Katherine Pierce|
Katerina Petrova, better known as Katherine Pierce, is a Petrova doppelgänger and the main antagonist of The Vampire Diaries.
She serves as the main antagonist of Season 1, one of the two main antagonists of Season 2 (alongside Niklaus Mikaelson), a supporting anti-heroine of Season 3, the secondary antagonist of Season 4 and a protagonist villain turned temporary main antagonist of Season 5, where she joined the main characters, as well as the final main antagonist for Season 8, and thus the series as a whole.
She is a vampire who was the lover to the Salvatore brothers, which may have caused their feud. She is the ancestor of the series' heroine Elena Gilbert. In the Season 4 finale Graduation she is forced to have the Cure by Elena which made her human (later found out that her Father was a Traveler, which means she was a witch).
After being force-fed to Silas in Season 5, Episode 5 Monster's Ball, she begins to age rapidly. She took control of Elena's body and became a Passenger in 500 Years of Solitude. She died in Season 5, Episode 15 Gone Girl next to her daughter Nadia Petrova, who died of a werewolf bite. She was sucked into Hell after not being allowed to go to the Other Side.
After Katherine was sent to Hell, she manipulated Arcadius since the minute she was there. She eventually returned became an ally of Kai Parker and after Cade's death and became the queen of Hell. Shortly after, she was killed by the Mystic Falls Gang after Bonnie sent hellfire back to hell while Katherine was there. Hell was destroyed and Katherine's fate remain unknown, either she was destroyed with hell or moved on and found peace.
She is portrayed by Nina Dobrev, who also played Elena Gilbert in the series.
Katherine is described as a manipulative and ruthless person, as she will deceive anyone to get what she wants or for self-preservation. She is a capable manipulator and charmer, being able to manipulate Arcadius, and become the queen of hell. She also has a strong hatred of her doppelgänger Elena, and has attempted to ruin her life on numerous occasions.
Despite these traits, Katherine has shown genuine affection for others, notably Stefan, and has stated numerous times she loves him. She also has helped Damon on a few occasions, despite having told him she didn't love him after her return. When she learned she was going to die, she fell into a deep depression, and attempted to commit suicide before Stefan saved her.