How to get one
The best chance per place. The same table can do better at another hour; the tool gives them all.
Red
| Place | Method | Level | Per attempt |
|---|
| Pokémon Mansion B1F |
Grass |
31–33 |
1.94% |
| Pokémon Mansion 2F |
Grass |
30–34 |
1.75% |
| Pokémon Mansion 1F |
Grass |
30–32 |
1.56% |
| Pokémon Mansion 3F |
Grass |
31–35 |
1.37% |
Blue
| Place | Method | Level | Per attempt |
|---|
| Pokémon Mansion 1F |
Grass |
30 |
0.20% |
| Pokémon Mansion 2F |
Grass |
30 |
0.20% |
| Pokémon Mansion 3F |
Grass |
34 |
0.20% |
| Pokémon Mansion B1F |
Grass |
35 |
0.20% |
Gold and Silver
| Place | Method | Level | Per attempt |
|---|
| Burned Tower B1F |
Grass morning |
14–16 |
2.93% |
| Burned Tower 1F |
Grass morning |
14–16 |
1.37% |
Crystal
| Place | Method | Level | Per attempt |
|---|
| Burned Tower B1F |
Grass morning |
12–16 |
3.46% |
| Burned Tower 1F |
Grass morning |
14 |
1.17% |
What it becomes
- Koffing becomes Weezing at level 35.
Base stats
| Stat | Gen 1 | Gen 2 |
|---|
| HP | 40 | 40 |
| Attack | 65 | 65 |
| Defense | 95 | 95 |
| Speed | 35 | 35 |
| Sp. Atk | 60 | 60 |
| Sp. Def | 60 | 45 |
Generation 2 split Special in two, and not down the middle: the two columns are not one value copied twice.