While a mention of bulkier EVs is mentioned in Wobbuffet's AC, Wobb with full defensive investment deserves a set of its own just because of how different it actually plays.
[SET]
name: Bulky
move 1: Encore
move 2: Mirror Coat
move 3: Counter
move 4: Safeguard
item: Leftovers
nature: Bold / Calm
evs: 28 HP / 252 Def / 228 SpD
[SET COMMENTS]
<p>Second only to Jirachi on the most-annoying-Pokemon-to-face scale, Wobbuffet demonstrates just how effective Shadow Tag can make a seemingly terrible Pokemon. With the deadly combination of Shadow Tag, Mirror Coat, and Counter, Wobbuffet can trap nearly any Choiced revenge killer, and take them out with either Mirror Coat or Counter. Encore helps provide the free turns that it's infamous for to support its teammates. Encore also helps when facing non-Choiced attackers, as it will help determine whether Wobbuffet should stay in to KO, or switch out for something else to take advantage of the Encore-locked Pokemon. Encore, Mirror Coat, and Counter are honestly the only things Wobbuffet needs, so the last moveslot is pure filler. Safeguard is used because it can offer status protection for Wobbuffet's team, but it really is just a waste of a turn to setup.</p>
[ADDITIONAL COMMENTS]
<p>The choice between Calm or Bold is entirely dependent on whether you want Wobbuffet to take special or physical hits better. The EV spread maximizes whatever defense Wobbuffet's nature is boosting, and the 28 HP EVs reach a Leftovers number. The remaining EVs are thrown into whatever defense is not being boosted by Wobbuffet's nature to bolster Wobbuffet's ability to take hits. The only other option Wobbuffet has to use in the last moveslot is Tickle, but considering that Wobbuffet is slower than Forretress, it doesn't have much use.</p>
<p>Because of Wobbuffet's ability to grant free turns and defeat Choice Scarf users, setup sweepers make great partners. Volcarona loves having Choice Scarf Terrakion removed, which Wobbuffet pulls off with ease, and can sweep quite easily with a free turn provided by Wobbuffet. Terrakion is much the same as Volcarona; it likes Choice Scarf users and priority being removed, and it loves to have a free turn of setup, both of which are provided by Wobbuffet. Terrakion also comes with the bonus of resisting Dark-type moves thrown at Wobbuffet, and even gets an Attack boost from them. Weather teams also appreciate Wobbuffet's support, because it can remove opposing teams' weather starters, which is amazingly helpful. Sadly, Wobbuffet's only curse is its lack of recovery, so a Wish passer will let Wobbuffet stay around like a cockroach and keep annoying teams. Blissey and Chansey are perfect for this job, and they can switch into Ghost-type moves aimed at Wobbuffet, while Wobbuffet can stomach the Fighting-type attacks hurled at the two blobs. It should also be mentioned that despite Wobbuffet's great bulk, it still faces the risk of being 2HKOed by powerful hits on the switch in.</p>
[SET]
name: Bulky
move 1: Encore
move 2: Mirror Coat
move 3: Counter
move 4: Safeguard
item: Leftovers
nature: Bold / Calm
evs: 28 HP / 252 Def / 228 SpD
[SET COMMENTS]
<p>Second only to Jirachi on the most-annoying-Pokemon-to-face scale, Wobbuffet demonstrates just how effective Shadow Tag can make a seemingly terrible Pokemon. With the deadly combination of Shadow Tag, Mirror Coat, and Counter, Wobbuffet can trap nearly any Choiced revenge killer, and take them out with either Mirror Coat or Counter. Encore helps provide the free turns that it's infamous for to support its teammates. Encore also helps when facing non-Choiced attackers, as it will help determine whether Wobbuffet should stay in to KO, or switch out for something else to take advantage of the Encore-locked Pokemon. Encore, Mirror Coat, and Counter are honestly the only things Wobbuffet needs, so the last moveslot is pure filler. Safeguard is used because it can offer status protection for Wobbuffet's team, but it really is just a waste of a turn to setup.</p>
[ADDITIONAL COMMENTS]
<p>The choice between Calm or Bold is entirely dependent on whether you want Wobbuffet to take special or physical hits better. The EV spread maximizes whatever defense Wobbuffet's nature is boosting, and the 28 HP EVs reach a Leftovers number. The remaining EVs are thrown into whatever defense is not being boosted by Wobbuffet's nature to bolster Wobbuffet's ability to take hits. The only other option Wobbuffet has to use in the last moveslot is Tickle, but considering that Wobbuffet is slower than Forretress, it doesn't have much use.</p>
<p>Because of Wobbuffet's ability to grant free turns and defeat Choice Scarf users, setup sweepers make great partners. Volcarona loves having Choice Scarf Terrakion removed, which Wobbuffet pulls off with ease, and can sweep quite easily with a free turn provided by Wobbuffet. Terrakion is much the same as Volcarona; it likes Choice Scarf users and priority being removed, and it loves to have a free turn of setup, both of which are provided by Wobbuffet. Terrakion also comes with the bonus of resisting Dark-type moves thrown at Wobbuffet, and even gets an Attack boost from them. Weather teams also appreciate Wobbuffet's support, because it can remove opposing teams' weather starters, which is amazingly helpful. Sadly, Wobbuffet's only curse is its lack of recovery, so a Wish passer will let Wobbuffet stay around like a cockroach and keep annoying teams. Blissey and Chansey are perfect for this job, and they can switch into Ghost-type moves aimed at Wobbuffet, while Wobbuffet can stomach the Fighting-type attacks hurled at the two blobs. It should also be mentioned that despite Wobbuffet's great bulk, it still faces the risk of being 2HKOed by powerful hits on the switch in.</p>