This page describes Donald Eustis' relationships with other characters in the Big Nate novels and comics.
Donald and Martin, who are neighbors, are close friends. They have gone golfing together.
Donald often hires Nate Wright, Martin's son, to do yard work and walk his dog.
Spitsy, Donald's dog, was bought by him when he saw a litter of seven dogs for sale. Donald often trusts his neighbor, Nate Wright, to walk him.