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The Kilonoid was the upgraded form of the Synthenoid. They were armed with the normal Synthenoids blaster and a flame bomb attack and also lasted longer than their previous form. The Kilonoids runs out of ammo or flame bombs, and disappear. The Kilonoids were capable of holding 12, 20 and 40 ammo in their original form and mega and ultra forms respectively.
- In the official demo of Ratchet & Clank: Going Commando, one could upgrade the Synthenoids into the Ultranoids, instead of the Kilonoids. This was changed in the final game but it is still possible to obtain the UItranoids by a glitch that may occur in Challenge Mode.
- Like Synthenoids, during the final battle with the Mutant Protopet, if the protopet ate an ammo crate it has a chance of spawning the Synthenoids/Kilonoids but with a darker coloring scheme. It is unclear how the Protopet does this when Synthenoids/Kilonoid ammo cannot be found in crates.
- Ratchet & Clank: Going Commando (first appearance)