This particular type of infected is noted for its exposed organs and its shambling jog. Its behavior is not unlike common infected, like Biters, but one major difference between it and them is that the bomber picks up speed and begins to convulse whenever non-infected humans are within proximity.
Whether this infected type manages to get close enough to the player character or is shot from a distance, the result always ends with the infected type's body exploding, blinding the player character with its coagulated blood.
The bomber not only explodes when in the vicinity of another player but also will explode if the player is within its view but cannot reach him, this explosion calls in Virals who are quite capable of climbing up to attack you generally in groups of 3-4 showing that the bomber has another role as well as a siren calling in dangerous zombies.
Throwing a weapon or using firearms are by far the safest way to eliminate a bomber, though a zero-durability thrown weapon method is possible simply by Vaulting over them, or running straight past them. If you Vault them when other zombies are nearby, you'll clear most of them and they'll be destroyed in the explosion.
Shields can fully negate damage from the explosion at the cost of a heavy durability loss, best used in dire situations where you won't escape the explosion or when encountered indoors. On a similar note, Losing them seems to block the damage as well, as shown during the "cutscene" when Crane encounters his first Bomber during a mission in a tunnel.
Another effective way to deal with bomber is throwing firecrackers. Bombers are drawn by firecrackers like normal enemies and will explode near the firecrackers as if the firecrackers is the player itself. Molotov Cocktails will make the bomber explode immediately. A high risk way of dealing with the bomber in co-op is to have a designated sacrifice, and use them to explode the bomber, saving the other players who can later revive the sacrifice.
Bombers can be safely detonated from a distance by using a grappling hook. Be careful not to grapple the ground near it as it will probably get you killed.
- Crane appears to dislike Bombers more than other infected as proved by a line he says occasionally upon encountering one saying "The exploding one's fucking perfect."
- Freezing Throwing Stars will preserve the Bomber's full character model after denotation.
- Bombers are very similar to Boomers from the Left 4 Dead franchise. Both have the ability to detonate on enemies and have inflated bodies, however the Bomber is more grotesque in appearance as it's organs are exposed, while the Boomer's aren't. It's also noted that while it doesn't excrete any bile like the Boomer does, its detonation noise attracting Virals is similar to the function the Boomer does.
It is also very similar to the Suicider in Techland's Dead Island, due to its attraction to the players character and exploding after a few short seconds.