Shawn Greene (TV Series)

Shawn Greene is Hershel's step-son, Maggie's step-brother, and Beth's half-brother. His zombified incarnation was kept in the Greene family barn along with several other zombies including his mother, Annette.

Greene Family Farm
Little is known about Shawn's life before or as the outbreak began. Shawn likely moved onto the farm following Annette's marriage to Hershel. Shawn was just a newborn child when he moved to the Greene Family Farm. His biological father is likely to have been out of the picture, since Shawn has his step-father's last name. Shane Walsh wanted to kill him.

Post-Apocalypse
Sometime after the initial outbreak, Shawn was killed by walkers. Before his initial reanimation, however, Hershel or Otis placed him inside of the barn, along with his mother, Annette.

"Bloodletting"
Hershel mentions that he lost both his son, Shawn, and his wife, Annette, during the outbreak.

"Save The Last One"
Maggie relates her sadness over Otis's death to her sadness over the deaths of Shawn and Annette. We later see pictures of him and Annette hung on the refrigerator in the farmhouse.

"Secrets"
Shawn and Annette are revealed by Hershel to be zombies in the barn. Maggie brought up his name, along with those of Annette and some of their neighbors, to Glenn when they were gathering supplies at Steve's Pharmacy.

"Pretty Much Dead Already"
Toward the end of the episode, Shane opens the doors of the barn. As the zombies exit, the remaining Atlanta Camp Survivors proceed to kill all of them, Shawn included.

"Nebraska"
Shawn, along with his mother, Annette, and Sophia are buried under the trees that can be found near the barn.

"Triggerfinger"
Maggie mentions Shawn while recounting a past event.

Killed Victims
This list shows the victims Shawn has killed:
 * Possibly numerous counts of zombies.

Killed By
Shawn and his mother, Annette, were both bitten and infected by walkers when they arrived back at the farm. Over a period of time, he becomes a walker and is taken to the barn.
 * Walkers

After Shane forces the barn open, the walkers inside proceed to exit. Systematically, they are shot and killed by the group of Atlanta Survivors. It is unclear which survivor provided the shot that extinguished the zombie Shawn. However, due to the fact his head-shot was executed by one a single bullet from handguns rather than the scatter-rounds from the shotguns, it was either Shane, Andrea, or T-Dog.
 * Atlanta Survivors

Trivia

 * In the TV Series, Shawn is Hershel's stepson. However, in the Comic Series, he is Hershel's biological son.
 * In the Comic Series, Shawn was Hershel's eldest child, but in the TV Series, he may be younger than Maggie.