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- "Dude, you buggin'. I'm tellin' you, nobody's in there."
- —Sean to Nate and Randall about the bar[src]
Sean is a survivor of the zombie outbreak and an antagonist in AMC's The Walking Dead. Sean who been had traveling around for an unspecified amount of time since the apocalypse began with Dave, Tony, Randall, Nate, Jane, and around 30 other survivors.
Nothing is known about Sean's life prior to the outbreak or as the outbreak began.
After the rest of Dave and Tony's gang (Randall, Nate, and Sean) had heard gunshots, they asked the survivors inside the bar if they have seen their friends. Rick Grimes answers that they're both dead, which causes a shoot-out to erupt between the two groups. Outside, when Glenn Rhee attempts to head to the car, Sean tries to kill both Glenn and Hershel Greene, but Hershel was able to open fire first, and Sean is hit in the lower body. After several minutes of moaning in agony and calling for help on the ground, Sean is ultimately eaten by the advancing Walkers. Hershel attempted to save Sean by shooting the nearest walkers, but more arrived and ultimately overran him.
After Hershel had shot Sean in the lower chest, he fell to the ground. Still alive, he laid in extreme agony, but it was only moments later that Sean was torn apart and eaten by walkers.
This list shows the victims Sean has killed:
- Numerous counts of zombies and possibly unnamed people.
Although Sean and Nate aren't seen interacting much it is assumed they had a stable relationship, due to them being in a group and attacking Rick, Hershel and Glenn in the bar together. However, Sean argued with Nate about leaving the bar after Rick informed them that Dave and Tony were killed, and when Sean laid in agony after being shot, Nate did not come to the aid of Sean, leaving it unknown how close there relationship was.
It is assumed that Sean and Randall had a stable relationship, due to the fact that they where in the same group together and attacking Rick, Hershel and Glenn in the bar together and after the gun fight, Randall asked Nate about Sean before attempting to join the escape, showing his concern.
Although not seen interacting, it is known that Willie and Sean has a close relationship, as Willie left by himself with no support to search for his brother after he did not arrive back to the camp, which led to his own death.