Almost nothing is known about Zach's life prior to or as the outbreak began. He attended an unspecified college and was able to survive with his fellow schoolmates. They may have been part of a larger group before being recruited to the prison 6 weeks prior to his death.
Zach is seen outside the prison with Daryl Dixon preparing to leave for the Big Spot supply run. While outside, Beth approaches him and kisses him. The two share some jokes with one another and Zach hops into the truck. Beth does not say goodbye to him.
At the store, Zach is seen outside with Daryl, banging on the windows to attract the walkers inside. The two talk and stay close to each other throughout the run. When Bob Stookey is trapped under an alcohol shelf, Zach and Daryl kill the walkers around the store and help lift the shelf off of Bob. While trying to exit the building, Zach is bitten by a crawling walker and is taken down. He is eaten alive and moments later, the helicopter that crashed into the roof collapses the ceiling and crushes Zach.
Back at the prison, Daryl delivers the news to Beth. She doesn't react much to the news saying she doesn't cry anymore and that it was nice to know him.
- Killed By
- Bob Stookey (Indirectly Caused)
After Bob sets the wine bottle back down on the shelf, the impact breaks the shelf, causing it to fall on him.
- Zombies (Caused)
As Zach lifts the shelf for Bob to escape, a walker grabs and bite his leg, before pulling him down and then biting his neck.
- Collapsing Roof
While Zach is being devoured, a military helicopter crashes through the store ceiling, crushing him.
This list shows the victims Zach has killed:
- Numerous counts of zombies
- "What? No goodbye?"
- —Zach to Beth before heading to Big Spot[src]
Over the course of time since the Season 3 finale, Zach and Beth have begun a romantic relationship. They cared about each other, kissing one another and being affectionate. Even though Zach and Beth were together, Beth was relatively unaffected by Zach's death, claiming that she doesn't cry anymore but was glad that she got to know him.
- "Okay, I think I got it this time..."
- —Zach, guessing what Daryl was before the apocalypse[src]
Zach and Daryl were seen to be friends for the short time they were seen together. It appears that Zach looked up to Daryl to some extent, as he was asking Daryl questions and joking with him. Also, throughout the Big Spot supply run, Zach was with Daryl, assisting him with killing walkers and helping Bob. Daryl also seemed upset that he died, stating that he is tired of losing people and agrees with Beth when she says that she's glad that she got to know him.
- Zach is the first character to die in Season 4.
- Zach was first revealed in the cast and crew panel at Comic-Con 2013.
- This character is officially credited as "Zach", whereas a behind-the-scenes video on the AMC website spells this character's name as "Zack".
- Juan Logar Jr. voices Zach in the Spanish dub.
- Juan also voices Gareth in the Spanish dub.
- Niclas Lutz voices Zach in the German dub.
- Niclas also voices Jimmy and Gareth in the German dub.
- Brice Ournac voices Zach in the French dub.
- Robert Kirkman confirmed Zach's background in an interview with New York Daily News on July 22, 2013.