For other uses of "Zack" or "Zach", see Zack (disambiguation).

Zack was a tail section survivor of Oceanic Flight 815. He was a young boy, travelling with his sister Emma to meet their mother in Los Angeles. Zack was one of only three children to have survived the crash of Oceanic Flight 815. Zack and his sister were kidnapped by the Others on their twelfth night on the Island. During their time with the Others, Cindy acted as their primary caretaker.

On the Island[]

Days 1–12 (Season 2)[]


Zack watches as Eko drags Emma out of the ocean. ("The Other 48 Days")

Seconds after the tail crashed into the ocean, Mr. Eko carried Zack to shore. Zack called out for his sister and pointed to her body floating in the water. Eko pulled her to safety and Zack rushed over to her. He dropped her teddy bear next to her before Eko led him away. Ana Lucia began performing CPR and soon revived her. Soon after the crash, Eko asked Cindy if she could look after Zack and Emma while he dragged the dead bodies out of the ocean.

That night the Others invaded the camp and kidnapped three of the survivors. In the morning, the group discussed whether or not they should stay on the beach. Libby held Zack and Emma during the discussion. Nathan tried to get the group to stay on the beach to continue feeding the signal fire, noting the fact that there were kids and injured people who would be difficult to move, and questioning how they would be rescued if they did not keep the signal fire going. Cindy backed up Nathan, informing the tail section survivors that they were a thousand miles off course when the plane crashed.

Ana Lucia and Libby became maternal figures to both Zack and Emma. The children were at Donald's funeral, both hugging Ana Lucia and looking sad. On Day 11, Ana Lucia looked on as Zack and Emma had a small disagreement while playing. However, the next day he and his sister were among the nine tail section survivors kidnapped by a mission of the Others. ("The Other 48 Days")

Juliet assisted in caring for Zack and Emma, who continued to ask about their mother in Los Angeles weeks after the crash. Ben assured Juliet that they would stop asking in time. Juliet reminded Ben that Zack and Emma were children, to which Ben retorted that the two were on the list. ("The Other Woman")


Zack walk by Jin and Eko.("...And Found")

A month after 12 of the survivors being taken by the others, the remaining tail section survivors found Sawyer, Michael, and Jin. After Michael disappears, Jin and Eko start looking for him. On their journey, Jin finds footprints which he believes to be Michael's, but Eko senses someone coming, so they hide. Hidden in the bushes, they see a procession of people go by in an almost unearthly silence. The Others are seen only from the knees down, all barefoot, all muddy, and the last, a child, carrying a brown teddy bear on a cord. This child is actually Zack. ("...And Found")

The day after Ana Lucia's death, Eko has a weird dream. Many moments flash through the dream, including the one where Jin and Eko see Zack's bare feet when he walks in the jungle with his teddy bear. ("?")

Days 74–86 (Season 3)[]


Zack gives Jack a confused look. ("Stranger in a Strange Land")

While Jack was imprisoned in the cages at the Hydra station, Zack, holding the teddy bear, approached him, along with his sister Emma and fellow crash survivor Cindy. After Jack yelled at Cindy, they turned to leave and Zack handed his sister the teddy bear. He remained behind for a moment and gave Jack a confused look. ("Stranger in a Strange Land") When Kate found Jack at the Barracks, Jack confirmed to Kate that they were safe. ("The Man from Tallahassee")

Zack was briefly glimpsed at the ruins along with Cindy and his sister after Ben shamed Locke due to his failure to kill his father. ("The Brig")

2007 (Season 6)[]


Cindy, Zack, and Emma listen to Sayid's speech. ("Sundown")

Zack and Emma lived with the Others at the Temple in 2007. Cindy asked them to give food to the survivors shortly after Sayid's apparent death. ("LA X, Part 2") Later that same day, Zack, Emma and Cindy listened to Sayid's speech and grew concerned when they heard what he had to say. They decided to leave the Temple along with fifteen or so fellow Others. Zack was seen holding his teddy bear during the exodus. ("Sundown")


The Man in Black comforts Zack and Emma. ("Recon")

Zack, Emma and Cindy followed the Man in Black to Claire's hut. Once there, Cindy inquired what happened to the people who did not leave the Temple. The Man in Black responded that they are all dead. This seemed to disturb Zack, and Emma and Cindy comforted him as he began to cry. The Man in Black walked up to Zack and told him that he knows what happened back at the Temple was really scary, but it's now over. He then promised the children he would take care of them. The group soon left Claire's hut and Zack and Emma were notably directly behind the Man in Black on the trek. Zack and Emma arrived with the rest of the group at a clearing, where the Man in Black declared they would be staying for a few days. ("Recon")

A few days later, Zack left the clearing along with the rest of the Man in Black's recruits, heading towards the beach to make a rendezvous with Sawyer. Later, the Others were heavily bombed by Charles Widmore's team, killing many of them. ("The Last Recruit") Sayid later mentioned to Jack that some members of the Others survived, scattering into the jungle. ("The Candidate")

Zack (along with Emma and Cindy) survived the mortar attack launched by Widmore's team and continued living on the Island under Hurley's reign. (Lost Encyclopedia)


  • Zack's episode count is 9.
2x05 Zack BTS

Zack in "...And Found".