Question

Well there are a few here is the list of what I know.
fighting-aggron and tyranitar
rock-charizard, buterfree, moltres, and buetifly.
fire-scizor, paras, parsect, and genosect.
ice-gible, gabite, garchomp, salamance, and raquaza.
flying-paras and parasect.
are there any I'm missing?

Answer 1

This is a complete list as of Gen 5:
x4 weak to ground
Rotom-H(but it has levitate), Magcargo, Hetran, Magnemite/Magneton/Magnezone, aron/larion/aggron, shieldon/bastiodon, and probopass

x4 weak to water
Numul/Camerupt, Magcargo, Geodude/Graveler/Golem, Onix, Rhyhorn/Rhydon/Rhyperior, Larvitar/Pupitar, aron/larion/aggron, shieldon/bastiodon, and probopass

x4 weak to rock
Moltres, Charizard, Ho-Oh, Larvesta/Volcorona, Arcticuno, Delibird, Butterfree, Scyther, Ledyba/Ledian, Yanma/Yanmega, Beautifly, Masquerain, Ninjask, Mothim, and Combee/Vespiquen

x4 weak to grass
Omanye/Omastar, Kabuto/Kabutops, Relicanth, Corsola, Tirtouga/Carracosta, Wooper/Quagsire, Marshtomp/Swampert, Barboach/Whishcash, Gastrodon, Palpitoad/Seismitoad, Geodude/Graveler/Golem, Onix, Rhyhorn/Rhydon/Rhyperior, and Larvitar/Pupitar

x4 weak to electric
Gyarados, Mantyke/Mantine, Wingull/Pelliper, and Ducklett/Swanna

x4 weak to fire
Snover/Abamosnow, Paras/Parasect, Wormadam (Plant Cloak), Sewaddle/Swadloon/Leavanny, Forretress, Scizor, Wormadam (trash cloak), Escavalier, Durant, Genesect, and Ferroseed/Ferrothorn

x4 weak to flying
Breloom, Virizion, Paras/Parasect, Wormadam (Plant Cloak), Sewaddle/Swadloon/Leavanny, and Heracross

x4 weak to ice
Torterra, Hoppip/Skiploom/Jumpluff, Tropius, Shaymin (sky form), Gligar/Gliscor, Landorus, Vibrava/Flygon, Gibble/Gabite/Garchomp, Dragonite, Altaria, Salamance, and Rayquaza

x4 weak to bug
Exeggcute/Exeggcutor, Celebi, Nuzleaf/Shiftry, and Cacturne

x4 weak to fighting
Sneseal/Weavile, Tyranitar, and Pawniard/Bisharp

x4 weak to psychic
Croagunk and Toxicroak

That's 115 pokemon with x4 weaknesses (if I counted right).

Magcargo, Paras/Parasect, Wormadam (Plant Cloak), Sewaddle/Swadloon/Leavanny, Geodude/Graveler/Golem, Onix, Rhyhorn/Rhydon/Rhyperior, Larvitar/Pupitar, aron/larion/aggron, shieldon/bastiodon, and probopass each have two x4 weaknesses!

Comments

aron and evos, sheildon and evo, and probopass aren't 4X weak to water, but they are 4X weak to ground and fighting. You should fix that.

Answer 2

There are just too many to mention. Check this link and look at all the squares with a green 4 in them: http://pokemondb.net/type/dual

Just looking at the Fire section there is Fire/Ground, Fire/Flying, Fire/Bug, Fire/Rock and Fire/Steel.

Answer 3

There are MANY pokemon which has 4x. like Onix, Graveler, Geodude, Golem are 4x super effective with grass and water. Gligar and Glicor with ice. Mantine and Gyarados with thunder. and many more, I think!

Comments

Great, and we have you as a contender in the category for best member who has left the site. Good to see you back.

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Yeah, thanks! just, I can't forget this site!

Answer 4

Swampert & wiacash have 4x of grass

Comments

And so Quagsire and Gastrodon

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Omastar and Kabutops

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flygon ice x4