Biographical Information
Real Name: Zack
Designation: X5-599, 330417291599
Species: X5


Occupation: soldier (former)
Status: Alive
Age: 21
Character Information
Gender: Male
Hair color: Blonde
Eye color: Green
Height: 6'1
Production Details
First appearance: 411 on the DL
Portrayed by: William Gregory Lee

Chris Lazar (child)


X5-599, or "Zack", is one of the twelve X5s, who successfully escaped from Manticore.


On the Run for 10 YearsEdit

Zack Young

Zack as a child

Zack was arrested shortly after the escape from Manticore, though he escaped 4 hours later, and was not seen again. Over those 10 years, he managed to find and hide the other escapees, keeping track of them and refusing to tell each one about the others in case they were captured by enemies. He is highly mistrustful of regular humans and very protective of his siblings, especially Max Guevara.

2019 and OnEdit

Zack first appears in Seattle under the alias of Sam, where he manages to obtain a job working at Jam Pony from Normal. After Max manages to track him down and learns that Sam is really Zack, they fight their way out of Zack's apartment as Lydecker had arrived. Zack seeks Max out after Brin is captured by Lydecker's men. Together the pair work with Lydecker to try and rescue her, but Lydecker betrays them. Zack and Max manage to make it out with Brin, but Brin insists that if, she is to live, she must be taken back to Manticore.

Soon after, Lydecker begins placing wanted posters for Max throughout Seattle. Zack returns to take Max away from the city to somewhere where they will be able to hide. When Max learns that Logan Cale has been admitted to the hospital, he allows her to leave after a short fight. He gives himself to the police and Lydecker in order to keep Max safe.

Zack eventually escapes Manticore, but only after accidentally revealing the locations of most of the other '09 escapees in the presence of a listening device. With the help of Eyes Only, Zack and Max manage to alert the others that Lydecker and Manticore is aware of their locations. After learning that Tinga is unable to get away, Zack and Max travel to Portland to help her. Once safely rescuing Tinga, she and Zack travel to Canada.

Zack again returns to Seattle when Tinga's son, Case, is hunted by Lydecker. After Tinga is captured by Brin and others from Manticore, Zack embarks on a mission to find and rescue her. They eventually find her, but she is dead.

In the episode ...And Jesus Brought a Casserole he gives his life to save Max.

It is revealed that Manticore had kept Zack alive by giving him artificial organs after harvesting his real ones for other X5s. After Manticore's destruction, Zack is bought on the black market by a gang of Steelheads, who use him as muscle. When he first sees Max he doesn't remember her, because parts of his brain have been replaced. Slowly his memories come back together, he leaves the gang and helps Max and Logan.
Cyborg Zack
After trying to kill Logan, Zack's memory was once again wiped from Max having electrocuted him, and he was given a new identity: Adam Thompson, a farm worker.

Following Zack's departure, the only other mentioning of the '09 escapees is in the episode "Hello, Goodbye" when Alec\X5-494 asks Max to tell him about his Manticore twin, Ben\X5-493, at Max's apartment after she busts Alec out of jail when he was arrested for a series of murders committed by Ben. After that, there are no other mentions of the 11 others that escaped manticore with Max.


Season One Appearances
Pilot Pilot Heat Flushed C.R.E.A.M. 411 on the DL Prodigy Cold Comfort Blah Blah Woof Woof Out Red
Art Attack Rising The Kidz are Aiight Female Trouble Haven Shorties in Love Pollo Loco I and I Am a Camera Hit a Sista Back Meow ...And Jesus Brought a Casserole}
Season Two Appearances
Designate This Bag 'Em Proof of Purchase Radar Love Boo Two Some Assembly Required Gill Girl Medium is the Message Brainiac The Berrisford Agenda
Borrowed Time Harbor Lights Love in Vein Fuhgeddaboudit Exposure Hello, Goodbye Dawg Day Afternoon She Ain't Heavy Love Among the Runes Freak Nation