Jackson Cunningham

Jackson Cunningham, better known by his nickname "Jax," is a sergeant in the Garrison.

History
Jax grew up in a poor family in the southern region of Wall Maria. His father was a woodcutter, and his family lived on land that was leased to them by a noble, earning food in exchange for cutting his trees and providing him with timber. After his father was left unable to work due to an accident, Jax began working as a woodcutter himself in order to keep the noble from evicting them.

When Wall Maria was breached in 845, Jax's father acted as bait for Titans, allowing himself to be eaten while his family escaped. However, Jax's mother was also devoured during their escape, and Jax was forced to flee alone with his baby sister. Upon arriving in Wall Rose as a refugee, Jax was unable to find enough food to feed himself and his sister, and so gave her away to another family to keep her from starving.