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The "Mad Cow" Scare was major ecological disaster that occurred on planet Tracitus IX. During the incident, mismatched prions infected the cow herds on the planet, making the bovines highly aggressive. During the incident, Gadgetron Corporation sent their researchers to Tracitus IX, who took samples of the mismatched prions from the "Mad Cows," creating the deadly Armoogeddon weapon.
- Ratchet & Clank: Size Matters (first appearance; mentioned only)