Wigglytuff, The Balloon Pokémon. It has large, saucerlike eyes. The surfaces of its eyes are always covered with a thin layer of tears. If any dust gets in it's eyes, it is quickly washed away. Its body is very flexible. By inhaling deeply, it can inflate itself seemingly without end. Once inflated, it bounces along lightly like a balloon. Its fur is the ultimate in luxuriousness. Sleeping alongside a Wigglytuff is simply divine. Its body expands seemingly without end when it inhales. Its fur is extremely fine, dense, and supple. The exquisitely pleasant fur conveys an image of luxury. The body is soft and rubbery. When angered, it will suck in air and inflate itself to an enormous size.

Battle Moveset

A Good Moveset for Wigglytuff would have to be this:

Attacks:

Seismic Toss / Return
Counter
Thunder Wave / Sing
Wish

Items Attached:

Leftovers

Preferred Nature:

Impish

Strategy Using Wigglytuff

The core Wigglytuff set. With it's huge HP stat it does a fantastic job with Counter and with Wish and a status it serves to support it's team effectively. It's defences are lacking but with it's large HP stat and single weakness it can soak up plenty of hits making it a useful UU/NU wall. Seismic Toss is a reliable move, dealing out 100 damage on everything (barring Ghost types) while Return gains STAB, either are usable but with Return you need to keep in mind that Rock and Steel types resist it and can take the time to Sub to block any Counter attempts.

EV Corner:

EVs: 4 HP / 252 Def / 252 SDef
Impish Nature (+Def, -SAtk)

With such low defensive stats it gains the most benefit from maxing defences rather than maxing HP. Even when using Return it's not worth investing EVs since you need as high defences as you can get.

Other Optional Sets

Wigglytuff @ Leftovers
Trait: Cute Charm
EVs: 252 Def / 136 SAtk / 120 SDef
Bold Nature (+Def, -Atk)
- Ice Beam
- Thunderbolt
- Counter / Thunder Wave / Sing
- Wish

Bolt-beam support set. In exchange for offensive versatility you sacrifice one supportive move. Since you have no STAB or guarantied damage some special attack EVs are needed meaning a defence has to be sacrificed. While a set like this is better suited to Clefable it still works on Wigglytuff.

Wigglytuff @ Choice Band
Trait: Cute Charm
EVs: 252 Atk / 136 Def / 120 SDef
Adamant Nature (+Atk, -SAtk)
- Focus Punch
- Return
- Shadow Ball
- Brick Break

Generic Choice Band set up. Brick Break has to fill in for the non-existence Earthquake for taking out Steel and Rock types. As with all Choice Band sets, it's all about prediction.

Wigglytuff @ Leftovers
Trait: Cute Charm
EVs: 252 Atk / 136 Def / 120 SDef
Adamant Nature (+Atk, -SAtk)
- Focus Punch
- Return
- Shadow Ball / Wish
- Substitute

Sub-Punch. It gets 101 Subs and the move pool for it but it's not exactly something it'll specialise in, for surprise sets the CB set is better.

Wigglytuff @ Leftovers
Trait: Cute Charm
EVs: 120 Def / 136 SAtk / 252 SDef
Calm Nature (+SDef, -Atk)
- Thunderbolt
- Ice Beam
- Psych Up
- Wish / Substitute

This set is mainly aimed at a Pokémon like Slowbro. Psych Up it's Calm Minds and go on the offensive. It can work on other Pokémon likely to use Calm Mind as well but there are only a few in UU and in OU this set doesn't stand a chance (due to the high offensive power of Calm Minders in OU).

Other Optional Moves

Charm, Light Screen, Reflect, Flamethrower, Body Slam and Toxic.

Charm lowers physical attack and makes it able to cause troubles for physical attackers who switch in, best used with some Spikes support and would probably replace Counter on the main set. Light Screen and Reflect are supportive moves and help out it's weak defences, Flamethrower is an elemental option on the support sets. Body Slam is a happy medium between Return and Thunder Wave, 30% chance to do paralysis and STAB is something to consider. Toxic is just another status option.

Strategy Against Wigglytuff

It's a Normal type and like many it gets a large move pool, giving it an element of surprise. Fighting types such as Machamp are the main counters, mach amp in particular benefits from Guts if it takes Thunder Wave. Hitmonlee also gets mention for it's Paralysis immunity. Ground types are also effective since they are immune to Thunder Wave. The main thing to watch out for is Counter, setting up a Sub before attacking is preferable.

Anything with a Stat-up and Recover strategy has good odds since as a tank it's offensive abilities are limited. Snatch will work surprisingly well against it since it'll be doing a lot of Wishes but few Pokémon carry and use that move effectively. While it has high HP it has low defence so repeated beatings will force it to use Wish. Unlike Softboiled/Recover/etc Wish can't be chained so you'll eventually get the better of it.

Contest Moveset

A good Contest Moveset for Wigglytuff would have to be this for the Cute Contest best with Timid, Hasty, Jolly or Naive Nature:

Attacks:

Sing
Rest
Attract
Encore

Items Attached:

Pink Scarf

Strategy Using Wigglytuff

If you do the attacks in this following order you should have very few problems; 1st - Sing, 2nd - Rest, 3rd - Attract, 4th - Encore, 5th - Sing

Locations in Games

Ruby/Sapphire/Emerald Evolve Jigglypuff Colosseum/XD Trade from RSEFRLG Fire Red/Leaf Green Evolve Jigglypuff

Animé Appearences

Wigglytuff has had a few Anime Appearences. First a trainer had one when they visited Mewtwo's Island. It got cloned and the clone later re-appeared. Another appearence was of a Wigglytuff in the film: "Pokémon In Love" starring opposite Misty's Psyduck. After that Harley used one in his Grand Festival match against May Movie 1: Mewtwo Strikes Back! Episode 071: Lights, Camerua, Quacktion! Special 2: Mewtwo Returns! Episode 326: Pros & Con Artists! Episode 457: May VS Harley! Double Battle On Stage!