The Gibbs Family consists of Robert "Rob", his wife Susan "Sue" and their two year old daughter Mary, who is "Boo". In the series, they appear twice. In the first instance, Oozma Kappa check a door and overhear Rob and Sue talking about trying to have a child. In the second instance, Boo appears as a baby noticing the unusual behavior of her closet and peeks in, explaining why she is seemingly more comfortable with monsters as a toddler in Monsters Inc.