<Table> <Tr> <Td> </Td> <Td> This article consists almost entirely of a plot summary . It should be expanded to provide more balanced coverage that includes real - world context . Please edit the article to focus on discussing the work rather than merely reiterating the plot . (November 2016) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article consists almost entirely of a plot summary . It should be expanded to provide more balanced coverage that includes real - world context . Please edit the article to focus on discussing the work rather than merely reiterating the plot . (November 2016) (Learn how and when to remove this template message) </Td> </Tr> <Table> <Tr> <Th_colspan="2"> Katerina Petrova (Katherine Pierce) </Th> </Tr> <Tr> <Td_colspan="2"> The Vampire Diaries character </Td> </Tr> <Tr> <Td_colspan="2"> The Doppelgänger of Amara, Tatia and Elena Gilbert </Td> </Tr> <Tr> <Th> First appearance </Th> <Td> Season 1 episode 6 "Lost Girls" </Td> </Tr> <Tr> <Th> Last appearance </Th> <Td> Season 8 episode 16 "I Was Feeling Epic" </Td> </Tr> <Tr> <Th> Created by </Th> <Td> L.J. Smith </Td> </Tr> <Tr> <Th> Portrayed by </Th> <Td> Nina Dobrev </Td> </Tr> <Tr> <Th_colspan="2"> Information </Th> </Tr> <Tr> <Th> Species </Th> <Td> Vampire (season 1 - 5) Doppelgänger (season 1 - 8) Traveler Witch (Traveler) </Td> </Tr> <Tr> <Th> Gender </Th> <Td> Female </Td> </Tr> <Tr> <Th> Occupation </Th> <Td> Noblewoman Socialite </Td> </Tr> <Tr> <Th> Family </Th> <Td> Unnamed Mother and Father </Td> </Tr> <Tr> <Th> Significant other (s) </Th> <Td> Stefan Salvatore (ex-boyfriend) Damon Salvatore (ex-boyfriend) Elijah Mikaelson (ex-boyfriend) Mason Lockwood (ex-boyfriend) </Td> </Tr> <Tr> <Th> Children </Th> <Td> Nadia Petrova (Daughter) </Td> </Tr> <Tr> <Th> Relatives </Th> <Td> Amara (Ancestor; Doppelgänger of) Tatia (Ancestor; Doppelgänger of) Isobel Flemming (descendant) Elena Gilbert (descendant) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Katerina Petrova (Katherine Pierce) </Th> </Tr>

What episode does katherine first appear in vampire diaries