| 2 | Gold | This Pokémon lives in cold water. It will leave the water to search for food when it gets cold outside. |
| 2 | Silver | When it walks around on the ground, it coats its body with a slimy, poisonous film. |
| 2 | Crystal | A mucous membrane covers its body. Touching it barehanded will cause a shooting pain. |
| 2 | Stadium 2 | This Pokémon lives in cold water. It will leave the water to search for food when it gets cold outside. |
| 3 | Ruby, Sapphire | Wooper usually live in water. However, it occasionally comes out onto land in search of food. On land, it coats its body with a gooey, toxic film. |
| 3 | Emerald | Wooper usually live in water but come out onto land seeking food occasionally. On land, they coat their bodies with a gooey, toxic film. |
| 3 | FireRed | When it walks around on the ground, it coats its body with a slimy, poisonous film. |
| 3 | LeafGreen | This Pokémon lives in cold water. It will leave the water to search for food when it gets cold outside. |
| 4 | Diamond | It lives in cold water, half burying itself in mud at the bottom to sleep. |
| 4 | Pearl | When the temperature cools in the evening, they emerge from water to seek food along the shore. |
| 4 | Platinum | When walking on land, it covers its body with a poisonous film that keeps its skin from dehydrating. |
| 4 | HeartGold | This Pokémon lives in cold water. It will leave the water to search for food when it gets cold outside. |
| 4 | SoulSilver | When it walks around on the ground, it coats its body with a slimy, poisonous film. |
| 5 | Black, White, Black 2, White 2 | When walking on land, it covers its body with a poisonous film that keeps its skin from dehydrating. |
| 6 | X | This Pokémon lives in cold water. It will leave the water to search for food when it gets cold outside. |
| 6 | Y | When the temperature cools in the evening, they emerge from water to seek food along the shore. |
| 6 | Omega Ruby, Alpha Sapphire | Wooper usually lives in water. However, it occasionally comes out onto land in search of food. On land, it coats its body with a gooey, toxic film. |
| 8 | Sword | This Pokémon lives in cold water. It will leave the water to search for food when it gets cold outside. |
| 8 | Shield | When walking on land, it covers its body with a poisonous film that keeps its skin from dehydrating. |
