- "Marcus? Where you at buddy?"
- —Scott searching for Marcus.[src]
Marcus is a survivor of the outbreak in AMC's The Walking Dead. He was a member of the Saviors. After the conclusion of the war and the apparent death of Rick Grimes, he is adopted by Scott and moves to the Alexandria Safe-Zone.
Nothing is known about Marcus' life prior to or as the outbreak began.
At some point in the apocalypse, Marcus and his family or guardian somehow came into contact with a group named "the Saviors" which they subsequently joined.
After losing his family during the war against the militia, Marcus becomes an orphan and remains living in the Sanctuary. When the community eventually falls, he is adopted by Scott and moves to Alexandria.
Marcus is among the Alexandrian children to enjoy the bonfire with Winnie, Linus, P.J. and the other kids from Jocelyn's group. He attends a sleepover at the house Jocelyn and her kids are staying at when in the middle of the night, they all leave Alexandria under the guise of playing a game. In reality, Marcus and the other Alexandrian children, including Judith, Alice, and Jonah, are kidnapped and brought to an abandoned school.
When Michonne and Daryl arrive at the school to rescue the children that dawn, they are rushed by Jocelyn's group members into a trailer, with Mitchell ordering Winnie to kill them all. Fortunately, none of the Alexandrian kids are hurt and they were brought safely back to Alexandria. Upon arriving home, Marcus is hugged by his father.
This list shows the victims Marcus has killed:
- Possibly several zombies
- "Scars" (Flashback)