Ted Keller is the father of T.C. Keller, and the widower of Nikki Keller. Ted is kind and patient, and a very good father. He enjoys a good father-son relationship with T.C., and it is more like the two of them are friends than simply family relations.
Ted owns a construction company, and is good friends with Augie's father, Craig. The two frequently exchange advice and stories about their sons. Ted has been on a series of dates, but finally falls for Lori, the school guidance counselor, whom T.C. helps goad into dating Ted.