Keaton Francis Costello (born January 22, 2008) is the youngest son of Dale and Amy, and the youngest brother to Logan, Carley, Chaslyn, Joelle, Corban, Addison, Nolan, Bryson and Cameron. He is also the older brother of Jocelyn and Johnny.
As a baby, he is mainly shown being carried around by various family members. He has to be cared and fed by his older siblings. He is well behaved.
Keaton was 8 months old when he appeared on Supernanny, and as of 2018, he is 10 years old.