Overqwil is a Dark/Poison-type Pokémon introduced in Generation VIII and a final stage of its evolution line, with a base stat total of 510.
Overqwil
Abilities
Poisons foe on contact.
Raises SPEED in rain.
Lowers the foe’s ATTACK.
Hidden AbilityBase Stats
Overqwil's Weaknesses and Resistances
Evolution Chain
Qwilfish evolves into Overqwil by using barb Barrage in Strong Style 20 times.

Overqwil Overqwil Playthrough, Competitive, and Nuzlocke Usage
Using Overqwil in a Playthrough
The Qwilfish family is split between the original Johtonian form, which does not evolve, and Hisuian Qwilfish, which can evolve into Overqwil. Johtonian Qwilfish is Water/Poison with respectable base 95 Attack, good physical Defense and Speed, useful resistances, and access to tools such as Waterfall or Liquidation, Poison Jab, Aqua Jet, Spikes, Toxic Spikes, Haze, and Thunder Wave depending on generation; Intimidate is especially useful when the Hidden Ability is available. Its older-generation performance is less clean because Water attacks were special before Generation IV and therefore did not use Qwilfish's stronger Attack, while the physical/special split made its physical Water offense much more natural. Hisuian Qwilfish instead becomes Dark/Poison and evolves into Overqwil through game-specific conditions involving Barb Barrage; Overqwil reaches base 115 Attack with much better overall physical bulk while Dark/Poison typing leaves Ground as its only ordinary weakness and grants a Psychic immunity. Overqwil can therefore function as a strong physical attacker, Intimidate-based utility Pokemon, hazard setter, or Swift Swim rain attacker, making the Hisuian branch far more powerful as a conventional story team member.
Overqwil in Competitive Pokémon
Johtonian Qwilfish has maintained a legitimate lower-tier competitive niche since Generation II through the combination of Spikes, respectable Speed, useful defensive typing, and later Intimidate. In GSC UU it was considered the tier's premier Spikes setter while also offering fast Haze, and later generations expanded its hazard role with Toxic Spikes and gave it stronger physical defensive utility through Intimidate. Its Water/Poison typing lets it check several Fire-, Fighting-, Water-, Ice-, and Fairy-type attackers, but poor Special Defense, Ground and Psychic weaknesses, and a lack of reliable recovery make it relatively easy to wear down. Overqwil adds a more powerful modern branch: Dark/Poison typing has only a Ground weakness, base 115 Attack provides real offensive pressure, and Intimidate, Spikes, Toxic Spikes, Haze, Taunt, Swords Dance, and Barb Barrage allow both defensive and offensive sets. Swift Swim also gives Overqwil a genuine rain-sweeper niche, and it has even appeared as an offensive option on modern OU rain teams despite remaining a more specialized choice overall.
Overqwil in Nuzlockes
Johtonian Qwilfish can be a useful Nuzlocke encounter because Water/Poison typing provides numerous resistances, respectable physical bulk, and good enough Speed to avoid taking unnecessary hits against many slower opponents. Intimidate is particularly valuable if legitimately available because lowering physical Attack on entry creates safer matchups, while Haze can provide an emergency answer to setup opponents and Aqua Jet can finish weakened targets with priority. Its low Special Defense remains the major danger, and powerful Electric, Ground, or Psychic attacks can overwhelm it much more quickly than its physical bulk suggests. Hisuian Qwilfish and Overqwil are even more defensively appealing: Dark/Poison typing leaves Overqwil with only a Ground weakness under ordinary conditions and gives it a complete Psychic immunity, while its 85 HP and 95 Defense pair especially well with Intimidate. The line still lacks dependable recovery and therefore accumulates chip damage over long routes, but Overqwil offers an unusually forgiving combination of few weaknesses, good Attack, and physical durability.
Learnsets
64 moves · Scarlet Violet
Level Up
Machine
Pokédex Entries
1 entries
Its lancelike spikes and savage temperament have earned it the nickname ”sea fiend.” It slurps up poison to nourish itself.
Additional Images
PokeAPI sprites
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Overqwil Biology and Behavior
Overqwil is an aggressively territorial marine predator whose enormous barbed spines and violent temperament have earned it the nickname 'sea fiend.' It feeds on poison itself, continuing the toxin-accumulating biology of Hisuian Qwilfish while developing much larger and more dangerous spines. Those spines react automatically to movement even while Overqwil is asleep, stabbing at anything that approaches without requiring the Pokemon to wake or consciously aim. The barbs can lodge so firmly in a victim that removing them is extremely difficult after they puncture flesh. Its combination of reflexive defenses, short temper, and poisonous diet makes Overqwil far more overtly dangerous than the already hazardous Qwilfish from which it evolves.
Overqwil Biological Data
- National Pokédex
- #904
- Species
- Pin Cluster Pokémon
- Height
- 8' 2" (2.5 m)
- Weight
- 133.4 lbs (60.5 kg)
- Habitat
- Currently Unknown
- Color
- Black
- Body Style
- Fish
- Gender
- 50% female / 50% male
Misc
Catch Rate: 135
Base Experience: 179 Exp
Hatch Counter: 20
Overqwil Size Comparison: BETA
Overqwil is listed at 8' 2" (2.5 m) and shown in an in-chart visual comparison.

How is visual size determined?
Pokédex height is treated as the official listed measurement, but the chart uses pose-aware visual scaling so each sprite looks reasonable in a direct comparison.
For long or coiled Pokémon, the listed height may represent total body length rather than upright height. For Pokémon with floppy ears, leaves, feathers, antennae, wings, or other flexible features, the chart usually measures to the top of the solid, substantial part of the head or body instead of the tallest decorative feature.
The goal is not to replace the official height, but to make the artwork compare naturally at the size it appears to occupy.












