The Beheaded Bomber appears as a headless man suited in a green T-shirt, holding their head in one hand, and producing pocket bombs from the other. In Serious Sam HD, their heads are impaled on a spike protruding from their necks, and carries a bag of grenades in their right hand.
The Bomber is an executed Sirian soldier, raised from the dead by Mental, and controlled with a "Life Control Unit" (LCU). A Bomber is equipped with their head in their left hand and produces inflatable bombs from their pocket in the right. In Serious Sam HD, the Bomber produces bombs from a grenade pouch, and tosses them with their left hand.
In The First Encounter, Beheaded Bombers are generally rare enemies, albeit slightly more common than Beheaded Firecrackers. Bombers are either found at ground level with Beheaded Rocketeers or on elevated places such as low pillars and rooftops. They are normally found in smaller groups of other headless minions. Bombers are a lot less common in The Second Encounter, often replaced by Zorg Mercenaries, particularly in later levels (save a few instances).
The Bomber's only attack is throwing grenades. These grenades make slight whooshing noises of being tossed, until they hit the ground or the player, detonating. Bomber grenades have a smaller splash damage radius compared to the MK III grenades. When killed, a Bomber will explode soon after their death.
Bombers are not immune to their own grenades, which can lead to clever tactics of causing one to kill themselves or another Bomber.
- Small and large groups should be dealt with in haste, as their explosive bombs are more powerful than a Rocketeer or Firecracker missile.
- The Bomber's grenades can be shot in mid-air, should consequences be dire.
- Melee attacks are not recommended, as the Bomber can still throw grenades at a short distance when approaching. If the player is close to the death explosion, being caught in the radius can take off a bit of health, especially in higher difficulty levels. However, this is not as powerful as a Beheaded Kamikaze's death explosion.
- Like Firecrackers, Bombers can be dangerous if mixed in with other enemies. When this occurs, Bombers are usually perched on high spots where they can rain down grenades without the player noticing until an explosion is heard, or if the grenade collides. If left unchecked, Bombers can inflict a large amount of damage while the player is fighting more dangerous threats.
- Because the bombs have such small blast radii, the player can consistently avoid Bombers' grenades by strafing continuously in a single direction, even at close range.
- An early alpha shot of the Beheaded Bomber shows that it was supposed to have a chainsaw and a spike on the stump of their necks. The spike was eventually added back to the Bomber in Serious Sam HD, but with their decapitated heads being stuck into it.
- This design is similar to the Firecracker from the alpha version, both would have appeared to have pikes in their necks, holding red inhuman heads in one hand, and a chainsaw in the other. The difference between the two enemies being the clothing attire, where the Bomber would sport a green T-shirt with a strange pattern embedded on it, and white pants.
- In both Classic and HD, the bomber used grenades that appear identical to the grenades used by a Beheaded Kamikaze.