<Dd> (In particular, Introduced in season 9 or Only in season 9) </Dd> <Table> <Tr> <Td> <H3> Main cast (edit) </H3> <Ul> <Li> Jennifer Aniston as Rachel Green </Li> <Li> Courteney Cox as Monica Geller - Bing </Li> <Li> Lisa Kudrow as Phoebe Buffay </Li> <Li> Matt LeBlanc as Joey Tribbiani </Li> <Li> Matthew Perry as Chandler Bing </Li> <Li> David Schwimmer as Ross Geller </Li> </Ul> </Td> <Td> <H3> Recurring cast (edit) </H3> <Ul> <Li> Paul Rudd as Mike Hannigan </Li> <Li> Hank Azaria as David </Li> <Li> Aisha Tyler as Charlie Wheeler </Li> <Li> Dermot Mulroney as Gavin Mitchell </Li> <Li> Phill Lewis as Steve </Li> <Li> James Michael Tyler as Gunther </Li> </Ul> </Td> <Td> <H3> Guest stars (edit) </H3> <Ul> <Li> Maggie Wheeler as Janice Hosenstein </Li> <Li> Elliott Gould as Jack Geller </Li> <Li> Christina Pickles as Judy Geller </Li> <Li> Christina Applegate as Amy Green </Li> <Li> Freddie Prinze, Jr. as Sandy </Li> <Li> Selma Blair as Wendy </Li> <Li> John Stamos as Zack </Li> <Li> Jeff Goldblum as Leonard Hayes </Li> <Li> Kyle Gass as Lowell the Mugger </Li> </Ul> </Td> </Tr> </Table> <Tr> <Td> <H3> Main cast (edit) </H3> <Ul> <Li> Jennifer Aniston as Rachel Green </Li> <Li> Courteney Cox as Monica Geller - Bing </Li> <Li> Lisa Kudrow as Phoebe Buffay </Li> <Li> Matt LeBlanc as Joey Tribbiani </Li> <Li> Matthew Perry as Chandler Bing </Li> <Li> David Schwimmer as Ross Geller </Li> </Ul> </Td> <Td> <H3> Recurring cast (edit) </H3> <Ul> <Li> Paul Rudd as Mike Hannigan </Li> <Li> Hank Azaria as David </Li> <Li> Aisha Tyler as Charlie Wheeler </Li> <Li> Dermot Mulroney as Gavin Mitchell </Li> <Li> Phill Lewis as Steve </Li> <Li> James Michael Tyler as Gunther </Li> </Ul> </Td> <Td> <H3> Guest stars (edit) </H3> <Ul> <Li> Maggie Wheeler as Janice Hosenstein </Li> <Li> Elliott Gould as Jack Geller </Li> <Li> Christina Pickles as Judy Geller </Li> <Li> Christina Applegate as Amy Green </Li> <Li> Freddie Prinze, Jr. as Sandy </Li> <Li> Selma Blair as Wendy </Li> <Li> John Stamos as Zack </Li> <Li> Jeff Goldblum as Leonard Hayes </Li> <Li> Kyle Gass as Lowell the Mugger </Li> </Ul> </Td> </Tr> <Ul> <Li> Jennifer Aniston as Rachel Green </Li> <Li> Courteney Cox as Monica Geller - Bing </Li> <Li> Lisa Kudrow as Phoebe Buffay </Li> <Li> Matt LeBlanc as Joey Tribbiani </Li> <Li> Matthew Perry as Chandler Bing </Li> <Li> David Schwimmer as Ross Geller </Li> </Ul>

In what episode do monica and chandler get together