Katerina Petrova

Katherine Pierce, born Katerina Petrova, is a witch of the Traveler sub-culture and former main character on The Lunar Diaries. She is also the second known Petrova doppleganger of Amara and a cured vampire.

In 1490, at the age of 17, she gave birth to a baby girl out of wedlock and was disowned by her father for bringing shame to the family. She was exiled to England, where she met Niklaus Mikaelson and Elijah Mikaelson. She was attracted to both of them at first, but learned that she was a doppleganger and Klaus was using her as a sacrifice. She sabotaged his plan by turning into a vampire. Klaus was so infuriated that she had to live on the run for 500 years while he hunted her down.

In the late 19th century, she traveled to Beacon Hills, where she met Stefan Salvatore and Damon Salvatore, whose family hosted her at their estate. She fell in love with both brothers and caused them to transition into vampires. After the town found out the identities of the vampires, she faked her death and escaped from being sealed in the vampire tomb.

In 2011, she came back to Beacon Hills with the intention of obtaining her freedom by handing over the Petrova doppleganger Nina McCall to Klaus. She fled Beacon Hills after the curse was broken.

She is a member of the Petrova Family.