<Tr> <Th_colspan="2"> Sophie </Th> </Tr> <Tr> <Td_colspan="2"> Peanuts character </Td> </Tr> <Tr> <Th> First appearance </Th> <Td> June 18, 1968 </Td> </Tr> <Tr> <Th> Last appearance </Th> <Td> August 19, 1987 </Td> </Tr>

What are the names of the characters on charlie brown