Water · Special move · Gen 3
Hydro Cannon
Hydro Cannon is a Water-type special move introduced in Generation 3. It has 150 base power and 90% accuracy, with 5 PP (8 with PP Max). 16 Pokémon and forms can learn it.
Type
Water
Category
Special
Power
150
Accuracy
90%
PP
5 (max 8)
Priority
0
Effect
User cannot move next turn. If this move is successful, the user must recharge on the following turn and cannot select a move.
- Targets
- One adjacent Pokémon
- Scarlet & Violet
- Usable (11 Pokémon)
- Pokémon Champions
- Usable (10 Pokémon)
- Legends: Z-A
- Usable (4 Pokémon)
Type matchups as a Water attack
2× vsFireGroundRock
½× vsWaterGrassDragon
Pokémon that learn Hydro Cannon
16 Pokémon and forms (Mega Evolutions share their base form's moves). ✓ = can learn it in that game by any method; “Gens” lists every main-series generation it could be learned in.
| Pokémon | Type | Champions | S/V | Z-A | Gens |
|---|---|---|---|---|---|
 Squirtle | Water | 5 | |||
 Wartortle | Water | 5 | |||
 Blastoise | Water | ✓ | ✓ | ✓ | 3–9 |
 Mew | Psychic | ✓ | 9 | ||
 Totodile | Water | 3 | |||
 Croconaw | Water | 3 | |||
 Feraligatr | Water | ✓ | ✓ | ✓ | 3–7, 9 |
 Swampert | Water/Ground | ✓ | ✓ | ✓ | 4–9 |
 Empoleon | Water/Steel | ✓ | ✓ | 4–7, 9 | |
 Arceus | Normal | 6 | |||
 Samurott | Water | ✓ | ✓ | 5–7, 9 | |
 Hisuian Samurott | Water/Dark | ✓ | ✓ | 9 | |
 Greninja | Water/Dark | ✓ | ✓ | ✓ | 6–7, 9 |
 Primarina | Water/Fairy | ✓ | ✓ | 7–9 | |
 Inteleon | Water | ✓ | ✓ | 8–9 | |
 Quaquaval | Water/Fighting | ✓ | ✓ | 9 |
Hydro Cannon FAQ
What does Hydro Cannon do?
Hydro Cannon is a Water-type special move with 150 power. If this move is successful, the user must recharge on the following turn and cannot select a move.
Which Pokémon can learn Hydro Cannon?
16 Pokémon and forms can learn Hydro Cannon in at least one game: 11 in Scarlet & Violet, 10 in Pokémon Champions and 4 in Legends: Z-A. Examples: Squirtle, Wartortle, Blastoise, Mew, Totodile and Croconaw.
Is Hydro Cannon in Pokémon Champions?
Yes — 10 Pokémon can use Hydro Cannon in Pokémon Champions, with the same numbers as in Scarlet & Violet.
What is Hydro Cannon super effective against?
As a Water-type attack, Hydro Cannon is super effective against Fire, Ground and Rock, not very effective against Water, Grass and Dragon (unless its effect says otherwise).
Move data and effect text from Pokémon Showdown (MIT), generation from PokéAPI; learnsets for Gen 1–9, Pokémon Champions and Legends: Z-A from Showdown. Unofficial fan site.