Clauncher
The Water Gun Pokémon
Type: Water
Official Registration #: 692
Entry: A shrimp-like pokémon native to the warm Kalosean seas. This pokémon possesses bladders of compressed gas, which—in conjunction with its water glands—allows it to shoot high-pressured jets of water capable of shattering boulders at close range. It should be noted that this is the signature ability of a pokémon that only weighs eighteen pounds on average, so trainers should note that standing directly behind their clauncher as it fires might be a somewhat ill-advised idea.
Clawitzer
The Howitzer Pokémon
Type: Water
Official Registration #: 693
Entry: The evolved form of clauncher, by battle experience. Upon evolution, clawitzer gains its signature giant claw, which is capable of firing cannonballs of water strong enough to pierce tanker hulls. This same technique is also used to propel it across ocean currents, which means any time it fires cannonballs on the battlefield is a delightful and hilarious treat for all spectators (and possibly a leading cause of injury for new clawitzer trainers).
The Pokédex According to Bill 