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Official artwork of Tentacool

#0072

Tentacool

Gen I

Jellyfish Pokémon

WaterPoison

Pokédex entry · Red

Drifts in shallow seas. Anglers who hook them by accident are often punished by its stinging acid.

Height
0.9 m
Weight
45.5 kg
Base EXP
67
Growth
Slow
Catch rate

190/255Easy

Friendship

70/255

Base stats

HP40Attack40Defense35Speed70Sp. Def100Sp. Atk50
HP
40
Attack
40
Defense
35
Speed
70
Sp. Def★
100
Sp. Atk
50

Total 335

Medium

EV yield +1 Sp. Def

Real ranges (IV 0–31 · EV 0–252 · nature included)

MinMax
HP100147
Attack40101
Defense3695
Speed67134
Sp. Def94167
Sp. Atk49112
Total386756

About Tentacool

Jellyfish Pokémon, and the label undersells it in one respect: a real jellyfish doesn’t shoot lightning. This one does. Pokédex entries describe a crystal-like organ above its eyes that absorbs sunlight, refracts it through the water inside its body, and sends it back out as a beam of energy. The rest of its body is water and very little else.

That shapes its entire behavior. It doesn’t so much swim as let itself be carried along: it drifts through the shallow waters near the shore, which is where it crosses paths with people. Its tentacles are poisonous enough that the Pokédex itself recommends running to the hospital after a sting, and anyone who catches one by accident gets a dose of stinging acid for their trouble.

Dehydration is its weak point in the literal sense. Away from the sea, it dries out and becomes stiff, and sometimes shrunken specimens turn up in the sand, coming back to life as soon as they’re returned to the water. At 0.9 metres and 45.5 kilograms, much of that weight is liquid it can’t afford to lose.

It occupies the smaller half of a two-stage line, below Tentacruel. It has no alternate forms or regional variants: a single design, with no branches.

Combat analysis

×2

Weakness

ElectricGroundPsychic
×½

Resistance

FireWaterIceFightingPoisonBugSteelFairy

Tentacool in depth

Menokurage: jellyfish eyes

The Japanese メノクラゲ combines 目の (me no, “of the eye”) with クラゲ (kurage, “jellyfish”), pointing directly to the one thing that sets it apart from an ordinary jellyfish: the two red crystals on its head. The English Tentacool is lazier, a play on tentacle and cool, and that ending carries through the whole line to the cruel in its evolution.

The biological basis is simply a cnidarian with no extra frills. Almost transparent body, rounded bell, stinging tentacles, movement by current rather than muscle. The series’ contribution is optical: turning its internal water into a lens and the frontal crystal into the cannon. It’s one of the few Generation I creatures whose ranged attack has a mechanical explanation written directly into the Pokédex.

What it was left with after Gold and Silver’s stat split

In Red and Blue, it worked with a single Special stat of 100, which served both to deal and take damage. Its Bubble Beam hurt as much as it could withstand an opponent’s Psybeam. When Gold and Silver split that stat in two, the defensive half kept the full 100 and the offensive half sank to 50.

Few species came out of that overhaul worse off. It went from a reasonable special attacker to a special wall with its hands tied, and the problem was never fixed: the figures are still exactly the same today. That’s the direct reason its movepool feels wasted. It gets Hydro Pump at level 48, Sludge Wave at 44, Sludge Bomb and Ice Beam by TM, and none of the four really hits because the multiplier behind them simply isn’t enough.

Its fellow dual-types, and why they come out ahead

Water and Poison is an unusual combination. Qwilfish has shared it since Generation II and fills the same Toxic Spikes-setting role with better physical Attack; Mareanie arrived in Generation VII, and its evolution turned that defensive pairing into something considerably sturdier. The one here retains the advantage of being older, and not much else.

The obvious answers are Electric- and Grass-types. Chinchou hits it super effectively with Electric-type moves and even resists the Water it can throw back, while any decent physical attacker finds a 35 Defense that simply doesn’t hold up. Just be careful about chaining draining moves: with Liquid Ooze active, a badly calculated Giga Drain heals the wrong side.

One odd detail: Swords Dance appears in its list of compatible TMs. With 40 Attack and Poison Jab at level 36 as its strongest physical move, it’s one of those compatibilities that exists on paper and that nobody has ever used seriously.

TCG cards

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