Zach (TV Series)

"Well, the council pulled back everyone on the coal crew from going on the run. They're short handed right now. Figured I step up to help, and go with them."

- Zach to Beth on why he is going on the scouting run.

Zach is a character first encountered in Season 4 of AMC's The Walking Dead. He and a group of fellow college students joined the prison community over the time-gap between Season 3 and Season 4.

Pre-Apocalypse
Almost nothing is known about Zach's life before 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.

"30 Days Without An Accident"
Zach is seen outside the prison with Daryl 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 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 and says that it was nice to know him.

"Infected"
Zach is mentioned by Tyreese when he says to Karen that he still can't get over Zach's death.

"Isolation"
It is mentioned by Daryl that the car he was filling up for the antibiotics trip was Zach's Dodge Charger, which unsettles Bob, showing that he feels guilty about what happened. The car was ultimately lost to a herd of walkers.

"Indifference"
Zach is mentioned by Bob while he and Daryl are jump-starting the van. Bob blames himself for causing Zach's death because of accidentally pulling down the whole shelf of alcohol and attracting walkers, which also caused the helicopter to fall.

"Still"
Zach is mentioned by Beth as she asks if Daryl was a motorcycle mechanic before the outbreak, asking if Zach ever gussed that. He is also mentioned by Daryl during a conversation he is having with Beth, telling her how she lost two boyfriends and can't shed a tear.

Killed By
After Bob sets the wine bottle back down on the shelf, the impact breaks the shelf, causing the shelf to fall on him. After Zach lifts the shelf for Bob to escape, a walker grabs Zach's leg. This causes the walker to bite him.
 * Bob Stookey (Indirectly Caused)

After Zach lifts the shelf, a walker grabs Zach's leg. Then the walker bites into Zach's leg, pulls him down, and bites his neck. Zach is then eaten alive.
 * Walker (Alive)

While Zach is being eaten alive by a walker, more walkers are falling through the ceiling. The rest of the group escapes before the ceiling collapses, causing Zach to be crushed and killed.
 * Collapsing Roof (Before Reanimation)

Killed Victims
This list shows the victims Zach has killed:
 * Numerous counts of zombies.

Beth Greene
"What? No goodbye?"

- Zach to Beth before heading to Big Spot.

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.

Daryl Dixon
"Ok, I think I got it this time..."

- Zach, guessing what Daryl was before the apocalypse.

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.

Bob Stookey
Zach and Bob never really interacted with each other before, however Zach lost his life to save him. Bob was also shown to feel guilt as he struggled to sleep that night after indirectly causing Zach's death.

Trivia

 * Zach was first revealed in the cast and crew panel at Comic-Con 2013.
 * He is the first person to die in Season 4.
 * Kirkman confirmed his character's background in an interview with New York Daily News on July 22, 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".
 * Zach shares some similarities with Jimmy.
 * Both were boyfriends of Beth Greene.
 * Both died at a location that got overrun.
 * Both died while saving someone.
 * Both get bitten first on the leg and then in the neck.
 * Both appeared in one season.
 * Both were devoured in a destroyed location. Jimmy was in the RV which caught fire and Zach was crushed by the helicopter.