Post Season 3/Pre-Season 4: With everything over with, Chris goes to take care of another problem, Arthur Petrelli. Chris arrives at Pinehearst and faces off against Arthur. Arthur quickly steals all of Chris' powers, again. Using a gun he brought with him, Chris quickly takes out his uncle before Arthur can do anything to stop him.
Going back to New York, and trying to live a normal life, Chris is approached by Major General Jack O'Neill. Jack, who has been following on what's been going on, invites Chris to join a special program. After giving it some thought, Chris leaves, not saying where he has gone.
Chris joins a top secret program, known as Stargate Command. While he's with Stargate Command, Chris comes across a watch that attaches itself upon his wrist. Unable to get the watch off his wrist, he soon learns that the watch contains various abilities, like flight, super speed, and sound manipulation. Because of this, Chris is soon ordered by Jack O'Neill, who unbeknownst to Chris, is working along side the new, government funded Company, to investigate and come into contact with evolved humans.
Approximately five weeks later, Chris is back at Stargate Command where he runs into Mohinder, who has been working for the program. Mohinder explains that they've come up with a new formula, based off of Kathryn's DNA. Getting injected with the new formula, Chris regains his ability and absorbs Mohinder's enhanced strength. Saying goodbye to Mohinder and joining the new Company, Chris leaves and begins gaining new abilities.
Shortly after leaving Cheyenne Mountain, Chris meets up with Mark Stevens. The two discuss his ability and after duplicating it, he heads to California to get Claire's ability. However, before he does, Chris meets up with Adam Park, a mysterious young man. Learning the truth and grabbing two of Adam's abilities, Chris leaves, but not before his inner hollow takes over and does some damage to nearby buildings.
Traveling to Virginia, Chris meets Claire, and finds a body. Investigating, the two find out that the body was a victim of an animal attack. Meeting Annie, Claire's hyper roommate, Chris warns her that something will happen soon. Taking Claire's ability, Chris leaves. On his way back East, Chris meets Erik T. Metzger, and gains his teleportation ability. After doing some training with Erik, the two part ways.
Going back home to New York City, Chris gets a message from Elle Bishop, who he heard was dead. Saving her life and taking her in. During this time, he takes her ability and sometime later, he leaves, promising that he will be back. Going up to D.C., he meets with Nathan Petrelli and during their meeting, tries to take Nathan's ability of flight. However, he instead takes on Sylar's intuitive aptitude and telekinetic abilities. Chris also takes a part of Sylar's subconscious.
After giving in and activating Sylar's intuitive aptitude, Chris gets the "hunger" and begins going on a killing spree, taking on the name, Kelevra (Jewish, meaning bad dog), killing at least one person and taking their abilities. Shortly afterwards, he begins a mission to get Sylar's subconscious out of his mind and back into his own body. He first goes to his aunt, Angela Petrelli, and attempts to gain the information by threatening her. Angela outwits him and Chris confesses to what he's done. Learning of Nathan's actual demise and the plan to make Sylar think that he is Nathan, Chris and Angela strike a deal. In exchange for his silence and non interference, Angela will help Chris keep his secret, a secret.
Season 4: Season Four starts out with Chris "investigating" the death of Vera Johnson, an elderly woman with the ability to manipulate plants, and his second victim. In a routine check-in, Chris meets Juliet Bishop, Elle's twin sister. Learning that she has telepathy, he decides to go back on Angela's plan, for the most part, and use Juliet to get Sylar's subconscious back in his own mind. However, Chris and Juliet fall in love and start dating.
Hearing about a carnival of evolved humans from Noah Bennet, Chris travels to the carnival and meets Samuel Sullivan, the leader of the carnival. After learning that Samuel can help him control the hunger and get rid of Sylar's subconscious, Chris decides to join his "family". In exchange for doing so and being able to live in the city, Chris agrees to bring others to the carnival in hopes that they'll join.
After meeting with Samuel and Lydia, Chris is tasked with bringing Sylar to the carnival. Also getting a picture message on his cell phone from Samantha Miller, he goes to Baltimore, Maryland and meets an amnesic Sylar. On the run from the Baltimore Police, Chris gains a couple more of Sylar's abilities, and the two travel to the carnival, where Samuel welcomes them home. Entering the carnival, Chris gives Sylar part of his memory and part of his consciousness, although his half-brother needs some more work, being conflicted with Nathan's memories. While Sylar sleeps, Chris leaves on another assignment.
Supposedly feeling regretful and overwhelmed, Chris decides to talk to Peter, in hopes that his cousin could help him cope and control the hunger. Hearing that Peter and Noah Bennet was ambushed by a speedster, he is also there to make sure Peter is alright. Finding out that Peter has the man, Edgar's super speed ability, Chris offers Peter to absorb his teleportation ability. Peter refuses and tells Chris about a carnival in which Edgar works for. Deciding to go, Peter runs them over there, and Chris snatches Peter's super speed ability beforehand. The two split up and Peter tells him not to do anything Sylar-like.
While "searching" for Edgar, Chris meets up with Samuel once more and tells him that Peter's there. Intending to bring Peter to Samuel, the man is surprised when Samuel meets up with them after he finds Peter. Chris introduces the two and tells his cousin that he's joined Samuel's "family", and only brought him here so he could join as well. Peter, clearly upset at what happens, leaves angrily. About to go after his cousin, Chris is stopped by Samuel, who tells him to go talk to his mother. Chris is surprised to see his mother, who is still alive and well. Kathryn explains that she faked her death in order to hide from the government. She met Arnold at the carnival and decided to stay. However, with the Arnold's death, Kathryn feels an empty void. She then tells her son that his ability is flawed and imperfect. Using her ability, she corrects it. Kathryn also tells Chris that his other half-brother, Steven Steele is at the carnival as well and that Chris should see him before he leaves.
Meeting up with his brother, Chris and Steven catch up briefly. Steven shows his brother that he can manipulate energy and Chris duplicates the ability, ditching his electric manipulation ability. As he's about to leave, Chris meets up with Hiro Nakamura. Surprised that Hiro's at the carnival, he learns what Samuel did, with Charlie and all. Duplicating Hiro's ability and ditching the teleportation ability, Chris vows to help out Hiro, but not right now. Before he leaves, Hiro tells Chris where he put Mohinder Suresh at.
Leaving Steven, his mother, and the carnival, Chris about to go search for Sylar when Juliet tells him that she's pregnant confirming it with a visit to the doctor's, the two spend one last night together before Chris leaves. Deciding to go get help, Chris meets Matt Parkman for the first time and learns that Sylar's consciousness is inside Matt's head. Offering to transfer the consciousness into his own body, Matt refuses, and tells Chris that he'll deal with Sylar himself. As a parting gift, Matt allows Chris to duplicate his telepathy, getting rid of telekinesis.
Getting an invitation to the carnival with Juliet, the two go there and thanks to Lydia, they learn that they are having twins. On his way out to get an engagement ring, Chris decides to visit Peter, who is mourning over Nathan's death. Going to the hospital, he stops a potential hostage situation. Learning from Steven that his mother is sick, Chris convinces Peter to go and heal his mother. The three travel back to the carnival, and Peter heals Kathryn. Afterwards, he and Peter talk about the carnival and Samuel. While talking, Chris remembers what Mohinder told him, that Samuel's power is amplified by having other evolved humans around him. Realizing his mistake, Chris promises to leave the carnival. Before taking Peter back, he partially corrects Peter's ability, allowing his cousin to hold onto more abilities, but not a lot. Taking Peter back, Chris decides to try to stop Samuel, but needs help.
Finding out that Noah Bennet and Edgar are working together, as well as Peter and a newly reformed Sylar, along with Hiro and Ando, Chris decides to join up with Peter and Sylar, along with helping Noah Bennet. While on the day of Samuel's "big show", Chris attempts to turn some of the other carnies against Samuel, who with the help of Noah Bennet and a brain washed Eli, convince the carnies to leave. Once done, he, Peter and Sylar are about to leave. However, before they do, they Chris witness Claire showing her ability to the world.