<P> Kimberly Drummond was portrayed by Dana Plato . She was the only biological child and daughter of wealthy widower, Phillip Drummond (Conrad Bain). She was born on Park Avenue in New York City on October 22, 1964 . Kimberly was shown as a caring, loving big sister to both Willis and Arnold, but as a wealthy, coming of age teenager, she suffered from various problems . Several such instances took place in season 6, one of which involved a two - part "very special" episode on the dangers of hitchhiking, where she was nearly a victim of sexual assault by a deranged man named Bill (Woody Eney). In another episode, no one in the family knew that she was suffering from bulimia, though she later admitted to having a problem and agreed to seek help . </P> <P> Kimberly wasn't in the opening credits in the 7th season nor the 8th season, however, in the 8th season, there were clips of her and she is shown in the last frame of the opening credits for the 8th season . </P> <Table> <Tr> <Th_colspan="2"> Arnold Jackson </Th> </Tr> <Tr> <Th> First appearance </Th> <Td> "Movin' In" </Td> </Tr> <Tr> <Th> Last appearance </Th> <Td> "I, Done" (The Fresh Prince of Bel - Air) </Td> </Tr> <Tr> <Th> Portrayed by </Th> <Td> Gary Coleman </Td> </Tr> <Tr> <Th_colspan="2"> Information </Th> </Tr> <Tr> <Th> Gender </Th> <Td> Male </Td> </Tr> <Tr> <Th> Family </Th> <Td> Lucy Mae Jackson (mother) (1938--1977) Henry Jackson (father) (d . 1975) Phillip Drummond (adopted father) Kimberly Drummond (adopted sister) Willis Jackson (older brother) Sam McKinney (stepbrother) Maggie McKinney Drummond (stepmother) Myrtle Waters (distant cousin) </Td> </Tr> <Tr> <Th> Nationality </Th> <Td> American </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Arnold Jackson </Th> </Tr>

Who played arnold's girlfriend on diff'rent strokes