<Tr> <Th> First appearance </Th> <Td> "Pilot" </Td> </Tr> <Tr> <Th> Created by </Th> <Td> Seth MacFarlane </Td> </Tr> <Tr> <Th> Voiced by </Th> <Td> Seth MacFarlane </Td> </Tr> <Tr> <Th_colspan="2"> Information </Th> </Tr>

How many characters has roger been on american dad