Relations of Alec Bings, the kids grow down instead of up, and they each have different sight-related powers.
Mr.Bings is the father of Alec and Alice and sees to things (which probably means he sees the same way we do)
Mrs.Bings the mother who looks after things (seeing them as they were in the past?)
Alec Bings (has a seperate article) the eldest child and only boy, about ten and he sees through things
Alice Bings is Alec's sister and sees under things and the things she can't see under she overlooks.