Theodore Peter James Kinnaird Taptiklis is an English actor, director, producer, and musician. He is known for portraying Tobias "Four" Eaton in The Divergent Series film trilogy. He has also starred in the crime drama series Golden Boy (2013), the horror films Underworld: Awakening (2012) and Underworld: Blood Wars (2016) and the action film How It Ends (2018). In 2015, he became the brand ambassador for Hugo Boss fragrances for men, appearing in print ads and commercials. James also runs a film and television production company Untapped along with Andrew D. Corkin of Uncorked Productions.