<Tr> <Td_colspan="2"> A Song of Ice and Fire character </Td> </Tr> <Tr> <Td_colspan="2"> A White Walker with an ice spear, from Game of Thrones </Td> </Tr> <Tr> <Th> First appearance </Th> <Td> Novel: A Game of Thrones (1996) Television: "Winter Is Coming" (2011) </Td> </Tr> <Tr> <Th> Created by </Th> <Td> George R.R. Martin </Td> </Tr>

Who made the white walkers in game of thrones