Nothing is known about Johnson's life prior to or as the outbreak began, except that he worked as a crew member on the USS Pennsylvania.
Johnson is among the many crew members killed and reanimated while on board the USS Pennsylvania.
- Killed By
- Unnamed USS Pennsylvania crewmembers (Alive)
At some point, Johnson was bit by an undead crewmember and turned.
After they entered the USS Pennsylvania, one of them shot Johnson in the head.
This list shows the victims Johnson has killed:
- Possibly many enemy combatants (Pre-Apocalypse)
- Possibly numerous counts of zombies
- "USS Pennsylvania" (Zombified)
- While his name was never mentioned on-screen, his surname can be seen on his badge.