Tommy Geiger is a tween in the first Penderwicks book. He crushes on Rosalind Penderwick throughout the first two books, then they begin dating in number 3 . He is obsessed with football and food. He and Rosalind often tease each other good naturedly. Tommy loves ice cream and pizza. One day he comes into the Penderwick's house while the rest of Rosalind's family are watching a movie. Tommy and Rosalind eat ice cream together. Tommy has an older brother, named Nick.