 Thomas is the son of supercouple Ridge Forrester (Ronn Moss, later Thorsten Kaye) and Taylor Hayes (Hunter Tylo).He had two twin sisters, Phoebe (MacKenzie Mauzy) and Steffy (Jacqueline MacInnes Wood) and a half-brother, R. J. Forrester (Anthony Turpel) from his father's marriage to Brooke Logan (Katherine Kelly Lang).Between 1998 and 2001, the character of Thomas was played by various child actors.