Theodore Peter James Kinnaird Taptiklis is an English actor. He is known for portraying Tobias "Four" Eaton in The Divergent Series film trilogy. James starred in the horror films Underworld: Awakening and Underworld: Blood Wars, the action film How It Ends, and the science fiction film Archive. In television, he appeared in the crime drama series Golden Boy, the romance series The Time Traveler's Wife and the satire series The White Lotus.