Game ⇓ | Flavour Text ⇓ |
| Red/Blue | Thickly covered with a filthy, vile sludge. It is so toxic, even its footprints contain poison. |
| Yellow | Smells so awful, it can cause fainting. Through degeneration, it lost its sense of smell. |
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| Gold | They love to gath er in smelly areas where sludge ac cumulates, making the stench around them worse. |
| Silver | Its body is made of a powerful poi son. Touching it accidentally will cause a fever that requires bed rest. |
| Crystal | As it moves, a very strong poison leaks from it, making the ground there barren for three years. |
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| Ruby/Sapphire | This POKéMON’s favorite food is anything that is repugnantly filthy. In dirty towns where people think nothing of throwing away litter on the streets, MUK are certain to gather. |
| Emerald | It prefers warm and humid habitats. In the summertime, the toxic substances in its body intensify, making MUK reek like putrid kitchen garbage. |
| FireRed | It is usually undetectable because it blends in with the ground. Touching it can cause terrible poisoning. |
| Leaf Green | Thickly covered with a filthy, vile sludge. It is so toxic, even its footprints contain poison. |
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| Diamond/Pearl | A toxic fluid seeps from its body. The fluid instantly kills plants and trees on contact. |
| Platinum | A toxic fluid seeps from its body. The fluid instantly kills plants and trees on contact. |
| Heart Gold | They love to gather in smelly areas where sludge accumulates, making the stench around them worse. |
| Soul Silver | Its body is made of a powerful poison. Touching it accidentally will cause a fever that requires bed rest. |
| Black | A toxic fluid seeps from its body. The fluid instantly kills plants and trees on contact. |
| White | A toxic fluid seeps from its body. The fluid instantly kills plants and trees on contact. |
