Who are the children in Little Fockers?

In "Little Fockers," the children are Jack and Dina Byrnes' grandchildren, specifically their son, Henry, and their daughter, Samantha Focker. Henry is portrayed as a young boy who is beginning to navigate relationships and friendships, while Samantha is a teenage girl dealing with typical adolescent challenges. The film humorously explores the dynamics of family life and parenting through their interactions with the adult characters.