Nom Nom's family are family members of Nom Nom after he left them sometimes in the past. It is still unknown why he left them and what happens to them now. Nom Nom also doesn't know where they are and what happens to them now.
But in the episode Kyle Nom Nom believe that kyle is his brother because his brother has a big eyebrows.
The picture of Nom Nom's family with Nom Nom at the middle.