Will Robinson didn’t go short of good male rôle models in his life. He had a close, loving relationship with his father, as can be seen by smiles, heart-to-heart talks, hugs, and paternal pats on the back in numerous episodes. His relationship with Don was quite friendly; they are seen together regularly, and Don ruffles Will’s hair a couple of times. You might say Don is somewhere between a rather older brother or a youngish uncle in Will’s life.