|This article is about the TV Series character. You may be looking for his Comic Series counterpart or the Fear character.|
Nothing is known about Marco's life prior to or as the outbreak began.
Shortly after, the whole group reunites and gingerly uses ropes to drag an old covered wagon down the stairs and over the glass floor. The glass finally gives way and Ezekiel falls through it, dangling by the rope. Before the walkers can bite him, Daryl shoots at one and Rick and the others finally pull him to safety. Carol joyfully kisses him to celebrate.
The group leaves D.C. and prepare to head back to their own communities.
On the road, Alden talks to Kenneth and Marco about blacksmithing at the Hilltop. Marco jokingly admits that Earl scares him but Kenneth says that his father is willing to teach him on becoming a blacksmith.
Rosita and Daryl catch up with everyone to inform them that the main bridge is out due to a storm. Rick tells Tara, Gabriel, Aaron, and Anne to head back to Alexandria and the rest will go to an alternate route and spend the night at the Sanctuary.
In the woods, the wagon gets caught in the mud as walkers appear from the bushes. It finally budges and everyone rushes to gather the supplies until the walkers overwhelm them and they’re forced to leave. Kenneth runs back to free his horses but is bitten in the arm by a walker and then kicked in the ribs by the horse.
At night, in Hilltop, Marco attends Kenneth's funeral and comforts a heartbroken Tammy Rose.
A while later, a funeral is held for Jesus and everyone take turns hammering the nails in his coffin. Marco hammers a nail and then looks in sadness.
In the woods, Marco accompanies Tara and Magna's group in the search for Alden and Luke. They find a group of walkers feasting on their horses and kill them, while checking they aren't Whisperers. Connie notices that the horses were cut open and skinned with knives. Tara realizes that Lydia lied about it just being her mother out there and decides they should go back to Hilltop until they find out what this is.
In Hilltop, as the residents arm themselves and rush to the front gate as the Whisperer threat unfolds outside the walls, Marco informs Enid and the Suttons that the Whisperers have Alden and Luke hostage.
Later, Marco attempts to make noise with the others to attract the incoming herd away from Luke, Alden, and the baby abandoned by the Whisperer mother. A while later, from the gates, Marco watches as Daryl returns Lydia back to Alpha.
In the Kingdom, Marco watches from the crowd as Ezekiel declares they've finally accomplished Rick, Carl, and Jesus' dreams of reuniting the communities. “Let the fair of a new beginning begin!” Ezekiel says as everyone celebrates and applauds.
Later, Marco and a group prepare to leave the Kingdom to go to Hilltop and leave some soldiers in case of a possible attack. He then fist bumps Tara goodbye. In the woods, Marco and the rest encounter Ozzy, Alek, and D.J. and find one of Hilltop's carts overturned. The group decides to split up, with Marco going to the Hilltop.
The next day, in the Kingdom, Marco listens from the crowd as Siddiq delivers the tragic news, tells them how brave everyone was in their final moments and how he was intentionally kept alive to tell this very story. He encourages everyone to remember the fallen.
Some months after the blizzard, Marco is among the coalition members drafted into the militia that was formed in response to the Whisperer threat. He and the other militia conduct a training exercise on the Oceanside beach. As Ezekiel and Jerry methodically release walkers from a shipwrecked boat, Marco and the other militia work together as a unit to take out the walker threat.
They are successful and return to Oceanside to rest, eat, and socialize with the Oceansiders. That night, Marco helps put out the fire that was ignited in the woods in Whisperer territory after a satellite from outer space crashes.
Marco is alerted to the commotion of a tree falling onto a house and a portion of Hilltop's walls. He then helps the other residents rescue the trapped injured from the rubble. The next day, Marco and the other residents kill the incoming walkers with the help of the Alexandria convoy when the herd invades the community that night.
The following morning, Marco attends the council meeting where Michonne announces she will be delivering supplies to Oceanside after receiving reports of potential Whisperer activity. Later that day, Marco and a group prepare their convoy and head out on their journey towards Oceanside.
Marco and the group continue their journey towards Oceanside when they stop briefly after Scott comes across recent footprints on their path. When Luke convinces Michonne to stop at a library along the way, Marco and Dianne stay outside as lookouts as the rest of the group heads inside.
Later that day, the group arrives at Oceanside where Marco witnesses as the residents bring a captured man to the camp and accuse him of being a Whisperer. When walkers suddenly invade, he helps take out the threat and secure the community. The next day, Marco bids farewell to Michonne after she explains her plan to bring back weapons in exchange for helping Virgil get back home. He and the rest of the group then travel back to their communities.
This list shows the victims Marco has killed:
- Numerous counts of zombies
Kenneth, and Marco appeared to be good friends. While on the way back from the D.C. run the two were seen joking and laughing together and talking about Earl and if he would take Marco as his apprentice.
When Kenneth was killed, Marco was rather depressed.
Marco is seen comforting Tammy after Kenneth's funeral. It seems they have a mutual caring for each other.