Harris is Erica Kravid's loyal agent. 'Prime' is given to the original version of himself.
Harris captures Miko at Yamagato Tower, he gives her sword to Erica who identifies it as Hiro Nakamura's. Miko chops off his hand and escapes with Ren Shimosawa, while Harris's hand generates a clone of himself.
When Noah and Quentin are captured by Harris, Miko bursts into The Kravids Home, taking back her sword and giving them a chance to escape.
Harris has Noah cornered when Miko completes the game, releasing Hiro.
Harris takes Mohinder Suresh to the site of the bombing. He fights Hiro who discovers that any attempt to stop the bombing will result in a worse future.
Harris' clones have bombs strapped to themselves. They blow themselves up and are responsible for killing thousands of people at the Odessa Summit.
Harris captures past Noah and Caspar Abraham, and Matt Parkman, now working for Erica, interrogates Noah, but Caspar intervenes before he discovers the location of the children, erasing Noah's memories and overpowering Harris.
After Nathan sends Noah back to his own time, Harris arrives at their house and Hiro says goodbye to Nathan, Caspar and Anne to hold off Harris.
The Haitian, Carlos, Taylor and Farah barricade themselves in Sunstone Manor to hide from the Harris'. Luke Collins and Malina are ambushed by two Harris clones, Quentin and Phoebe, but they defeat Harris and capture the siblings. Miko holds off the army of Harris clones before facing the real Harris. Miko kills Harris by decapitating him, destroying his clones before she fades from existence.