<Table> <Tr> <Th_colspan="2"> "The Bubble Boy" </Th> </Tr> <Tr> <Td_colspan="2"> Seinfeld episode </Td> </Tr> <Tr> <Th> Episode no . </Th> <Td> Season 4 Episode 7 </Td> </Tr> <Tr> <Th> Directed by </Th> <Td> Tom Cherones </Td> </Tr> <Tr> <Th> Written by </Th> <Td> Larry Charles, Larry David </Td> </Tr> <Tr> <Th> Production code </Th> <Td> 407 </Td> </Tr> <Tr> <Th> Original air date </Th> <Td> October 7, 1992 </Td> </Tr> <Tr> <Th_colspan="2"> Guest appearance (s) </Th> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> Jessica Lundy as Naomi </Li> <Li> Brian Doyle - Murray as Mel </Li> <Li> Carol Mansell as the Bubble Boy's Mother </Li> <Li> O - Lan Jones as Waitress </Li> <Li> Jon Hayman as Voice of Donald </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Episode chronology </Th> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Td> ← Previous "The Watch" </Td> <Td> Next → "The Cheever Letters" </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td_colspan="2"> Seinfeld (season 4) List of Seinfeld episodes </Td> </Tr> </Table> <Tr> <Th_colspan="2"> "The Bubble Boy" </Th> </Tr>

Who did the voice of the bubble boy on seinfeld