(Pokémon Red, Blue, Yellow, Gold, Silver and Crystal Versions)
Sludge is a Poison-type move.
Learnset
The following Pokémon can use Sludge:
| Pokémon | Learnt |
|---|---|
| Grimer | at level 16GSC |
| Grimer | at level 37RBY |
| Muk | at level 37RBY |
| Muk | at level 45GSC |
| Koffing | at level 21GSC |
| Koffing | at level 32RBY |
| Weezing | at level 1RBY |
| Weezing | at level 21GSC |
| Weezing | at level 32RBY |