<Table> <Tr> <Th_colspan="2"> Lexa </Th> </Tr> <Tr> <Td_colspan="2"> The 100 (television) character </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> First appearance </Th> <Td> "Fog of War" (2.06) </Td> </Tr> <Tr> <Th> Last appearance </Th> <Td> "Perverse Instantiation--Part Two" (3.16) </Td> </Tr> <Tr> <Th> Created by </Th> <Td> <Ul> <Li> Jason Rothenberg </Li> </Ul> </Td> </Tr> <Tr> <Th> Portrayed by </Th> <Td> Alycia Debnam - Carey </Td> </Tr> <Tr> <Th_colspan="2"> Information </Th> </Tr> <Tr> <Th> Aliases </Th> <Td> Heda </Td> </Tr> <Tr> <Th> Species </Th> <Td> Human </Td> </Tr> <Tr> <Th> Gender </Th> <Td> Female </Td> </Tr> <Tr> <Th> Occupation </Th> <Td> Commander of the Grounders </Td> </Tr> <Tr> <Th> Significant other (s) </Th> <Td> <Ul> <Li> Costia </Li> <Li> Clarke Griffin </Li> </Ul> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Lexa </Th> </Tr>

When does lexa first appear in the 100