The Zombie has the same general body shape as the Runner; however, the exposed brain emerging on the top, removing the antennas, and the left leg being a raw bone change the silhouette slightly. The Zombie also has a small scar on the right side, and grayish-green skin, further differentiating it from the normal Runner.
On the Run Mobile game art, the Zombie has a scar underneath their right arm.
The Zombie is unlocked once you've completed Level 19 and moved forward to Level 20 in Run. There is no change in performance or gameplay when playing as the Zombie; the only difference lies in the design details.
As with all the costumes in Run, it is only available to those who are playing on Kongregate with an account.
In a very old version of Run 3, an alpha version of the Zombie can be played. His gameplay included dropping tombstones onto the level to represent a checkpoint. If the player fails in the level they're in, they will teleport back to the tombstone. These tombstones are laid out at least every 33 meters (if you are in the air after 33 meters, it will be placed down as soon as you hit the ground).
- However, player_03 was considering them at one point, as he wasn't sure of which costumes he would use. He says The Zombie wouldn't fit in the story, so he invented the Duplicator. He also couldn't work out gameplay.
- The Zombie is under consideration to become a costume for the Duplicator for Runaway3D as of March 28th's live stream.
- In the code, the Zombie is mentioned multiple times near other character data, along with some level data for some reason, while the Caveman is nowhere to be found. This implies that the Zombie got farther into production, despite being the seemingly harder character to fit in the story.