Bertha is a cranky old lady who helps Malcolm run a daycare center on an island off of North Harbor. She is very bad at cooking, but she enjoys doing it, so Malcolm lets her make strange foods occasionally, to keep her happy. Bertha hates children, but will usually take care of cleaning up and other behind-the-scene jobs at the daycare in order to make a living.
Eddy is a very happy young child that only appeared in the beginning of The Nays. He very insecure when left alone, so he will always be seen with his small group of friends. There are some spoilers about him that shall not be told yet though.