Roberta

Roberta Day Quimby is the youngest daughter of Mr. and Mrs. Quimby. She is most likely favored by her parents. She is often known for her babyish attitude.

Personailty
In the first book she appeared in, " Ramona Forever ", she was a newborn. In the movie it is shown she fights with Ramona, most likely because she always has a babyish attitude.

Ages
Ramona Forever: Newborn

Ramona's World; 1 in a half