Joseph Allen "Joe" Griswold is the third and middle child and the oldest son of Roberta and Allen. He is the younger brother of Brianna and Lauren, and the older brother of Alex.

Appearance on Supernanny

He had anger issues, swore, terrorized his brother, destroyed things in the grocery store, talked back to his parents, and even locked them outside the house, which earned him being a thorn in their (Allen and Roberta's) side.