Once during your opponent's turn, if Qwilfish is your Active Pokémon and is damage by an attack (even if Qwilfish is Knocked Out), you may flip a coin. If heads, the Attacking Pokémon is now Poisoned. Put 2 damage counters instead of 1 on that Pokémon between turns.
Attack
Nerve Shot
20
2 Water
Flip a coin. If heads, the Defending Pokémon is now Paralyzed.
Artwork is identical across finishes; the holo or reverse shimmer is indicative.
Story & meaning
Qwilfish is a Water/Poison-type Balloon Pokémon introduced in Generation II, modeled on a pufferfish or porcupinefish. It inflates its rounded body by swallowing water, causing its poisonous spines to bristle outward, and it can spray…
“It shoots the poison spines on its body in all directions. Its round form makes it a poor swimmer.”
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History
Qwilfish is a Water/Poison-type Balloon Pokémon introduced in Generation II, modeled on a pufferfish or porcupinefish. It inflates its rounded body by swallowing water, causing its poisonous spines to bristle outward, and it can spray toxins that make it loathed by fishers. A Hisuian regional form exists, which is Dark/Poison-type and notably evolves into Overqwil, expanding its role and lineage across regions.
Name & meaning
The Japanese name ハリーセン (Harīsen) combines 針 (hari, meaning 'needle' or 'spine') with センチメートル/扇 nuance, but it most directly puns on 'harisen' (張り扇), a paper fan, while also evoking 針千本 (harisenbon), the Japanese word for the porcupinefish (puffer). This neatly references the spiky, balloon-like body of the Pokemon. The English name 'Qwilfish' blends 'quill' (a sharp spine) with 'fish,' describing its needle-covered, fish-like form.