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Napalm Cells was a Raritanium upgrade for the Negotiator/Judicator which caused the weapon's rockets to be filled with pyrocidic Napalm globules which spewed on the ground where ever the rocket made contact with a wall or an enemy, inflicting damage to whatever walked over the napalm. This would increase the damage dealt due to an enemy being hit, as they had a little extra damage taken away before they moved towards you out of the Napalm or stood there and be inflicted.
- Ratchet & Clank Future: Tools of Destruction (first appearance)