|PERFORMER||Martin P. Robinson|
Irvine is Oscar the Grouch's niece, herself a baby Grouch. She appeared on on Sesame Street as early as season 12 up through season 30. She has a tendency to scream and cry very often. Her parents are not seen in the series.
In Episode 2402, Maria watches Irvine while she's taking her nap while Oscar goes to the Grouch supermarket. Unfortunately for Maria, the Count wakes Irvine up with his counting, and Maria can't get Irvine back to sleep. Biff and Sully (mainly Biff) read her the story of Cinderella, but that doesn't work either. The Two-Headed Monster plays her a violin lullaby, but that doesn't work and they start crying too. When Oscar returns, he tells Maria that there's only one way to get a Grouch baby to go back to sleep. He starts an argument with Grundgetta, which immediately put Irvine back to sleep. Oscar says Grouch babies love to fall asleep to the sound of a good loud argument. They continue arguing while an exasperated Maria announces the sponsors.
Maria watches Irvine while Oscar goes to the dump in Episode 2529. Maria intends to teach her a new word, but Oscar lingers, shifting Irvine's focus away from Maria's task. Getting frustrated with his refusal to leave, Maria finally yells at him to "SCRAM!" resulting in Irvine repeating the word. Later, when Oscar is gone, Big Bird stops by while Maria is trying to feed Irvine some sardines with strawberry ice cream. Big Bird says that he's just learned today what opposites are, and uses Irvine's refusal to eat or drink her bottle as examples. Later again, Irvine still won't eat when Bob stops by. Bob suggests that maybe Irvine will only eat from someone who's a grouch, so they both give it a try, but not even the airplane-coming-in-for-a-landing technique will work. When Oscar returns, he explains that you have to place the food within view and tell her not to eat. When she finally eats, Oscar remarks, "Isn't she nasty?"
In Episode 3811, Irvine insists that she be allowed to take a bath, much to the concern of Oscar. After allowing Irvine to take a bath, Oscar remarks, "She may be clean, but she's still ugly."
Irvine can also be spotted in the finale of The Muppets Take Manhattan.