An A-rank Contaminant that appeared at the commercial center. It wears a hat and has an eerie expression. Its body is rotten and grotesque, resembling a lump of putrid meat left to decay for years. The Bomber has the ability to make things explode — it can turn various areas into explosives and detonate them. When severely injured by Theodore, its body was torn into hundreds of fleshy clumps, each inheriting the explosive ability. These clumps can attach to objects and buildings, causing massive detonations. The Contaminant felt intense humiliation at its monstrous form and was consumed by resentment and vengeance, wanting to kill all the Awakeners.
