Blissey

Normal · Natural Cure / Serene Grace (irrelevant on the wall set) · VR A · The tier’s universal special wall — a 255-HP, Soft-Boiled sponge that no special attacker breaks one-on-one. You never run it on aggressive offense. You build the entire team to overload, trap, or blow it up.

Blissey is the wall you exist to break. It is the reason mixed and Choice Band physical breakers are mandatory, the reason Dugtrio carries Beat Up, the reason Explosion is everywhere. Every aggressive game plan in ADV passes through one question: how does this team beat Blissey? If you can’t answer it, your special attackers stall out and your offense dies on a 255-HP wall that heals 50% a turn. Frame everything below as the enemy you dismantle.

Format role

Blissey is one half of the special-side defensive backbone of ADV OU (the other half of the SkarmBliss duo being Skarmory, the physical wall). With a colossal 255 base HP and a passable special-defense profile, fully invested Blissey takes any unboosted special move in the tier and Soft-Boiles the damage straight back. It blanket-checks Zapdos, Suicune, Starmie, Jolteon, Gengar’s special STAB, Magneton, Charizard’s Fire Blast — the entire special-attacking half of the metagame. It absorbs status with Natural Cure (switch out, status gone) and spreads paralysis with Thunder Wave to drag your sweepers down to it. For offense, its canonical builds carry real special damage — Ice Beam and Thunderbolt for BoltBeam coverage, or a flat-100 Seismic Toss that out-PPs and out-lasts — and the scariest variant clicks Calm Mind to snowball into a special wall that also wins games.

The flip side is the entire reason this dossier matters to you: Blissey’s physical defense is garbage. Its Defense stat is low and its movepool offers nothing to deter a physical attacker. Where a special attacker bounces off, a Choice Band physical hit, a Curse-boosted Body Slam, or a Defense-halving Explosion tears straight through it. Blissey checks the special game and is helpless against the physical one — and that asymmetry is the hinge your whole team building turns on. See 02-viability-tiers for where it sits and 05-common-cores for the defensive spine you are attacking.

Sets

The canonical builds invest Special Attack, not raw HP: Blissey’s base-135 Special Defense is already so high that 252 Defense alone (to patch its abysmal base-10 Defense) plus the Modest SpA investment turns it into a wall that also hits back. Speed is never a priority — the spare 4 EVs go there only because there’s nowhere better. Both sets below are real Smogdex builds; the offense-relevant one is Calm Mind, which converts the sponge into a slow win condition.

Calm Mind (the win condition you must not feed)

Blissey @ Leftovers
Ability: Natural Cure
Nature: Modest
EVs: 252 Def / 252 SpA / 4 Spe
- Calm Mind
- Soft-Boiled
- Ice Beam
- Thunderbolt

The dangerous Blissey. Calm Mind stacks Special Attack and Special Defense at once, so behind its bulk it snowballs into a wall no special attacker can break and an attacker that out-damages every other wall. Soft-Boiled is 50% recovery and the engine of its longevity. Ice Beam and Thunderbolt are the BoltBeam coverage that hits the bulky Waters, Dragons, and Flyers that would otherwise sit on it. The Modest nature and 252 SpA push the damage; 252 Def is the cushion against the physical hits it dreads (even invested, it is the softest physical target in the tier among “walls”). If it ever gets two free Calm Minds against an all-special team, the game can be over — which is exactly why you go through it physically.

The other common build is the Utility set — Leftovers / Modest / 252 Def / 252 SpA / 4 Spe — running Soft-Boiled, Ice Beam, Seismic Toss, and Thunder Wave. Seismic Toss deals a flat 100 damage regardless of typing, used to chip and to win PP wars. Thunder Wave is the dangerous slot for offense — paralysis cuts your sweeper’s Speed to 1/4 (see 01-mechanics-fundamentals) and Blissey can spread it freely behind its bulk. Both canonical sets are Modest with Special Attack investment, so do not expect a passive, attack-less wall — even the “utility” Blissey carries Ice Beam.

How you break it

Blissey is a problem to be solved at the team-building stage, not a Pokémon you out-play in the moment. You don’t beat it with one tech — you stack two or three of these so it gets overloaded:

1. Choice Band physical attackers (its core weakness)

Blissey’s low physical bulk means a Choice Band physical hit is a 2HKO or worse, and it can’t threaten the attacker back. Fighting-type moves are the cleanest: Fighting hits Normal for 2×, so Heracross Megahorn/Brick Break, Medicham Brick Break/Focus Punch, and CB Tyranitar Focus Punch all crush it. Even neutral physical STAB does the job — CB Metagross Meteor Mash and CB Tyranitar Rock Slide (Rock is physical) overwhelm the soft Defense. The point of a CB breaker is that Blissey cannot switch in on it for free: it takes a huge chunk, Soft-Boils, and is back in 2HKO range immediately.

2. Dugtrio: trap and remove it

The single most reliable answer. Dugtrio’s Arena Trap locks Blissey in (it’s grounded, no escape), and Dugtrio carries Beat Up specifically for this matchup. Beat Up is Dark-type — and Dark hits Normal for 1× (neutral) — but its value isn’t type effectiveness: each hit is computed off a party member’s base Attack, so on a physical team it stacks into a heavy multi-hit that the soft Defense can’t absorb, then Earthquake (Ground is neutral on Normal, 1×) finishes. Trapping Blissey removes the opponent’s special wall permanently, which is why ZapDug-style offense (see 06-sample-teams) is so oppressive — kill the Blissey and the special attackers run free.

3. Explosion / Self-Destruct (delete it for tempo)

Explosion and Self-Destruct halve the target’s Defense during the damage calc in Gen 3, which turns Blissey’s already-weak physical side into paper. Gengar, Metagross, and Snorlax all carry Boom and will OHKO or near-OHKO Blissey through that Defense drop while opening a free switch for your next breaker. Explosion is Normal-type (Normal on Normal = 1×, neutral), but the Defense halving makes the neutral hit lethal. This is a tempo trade you almost always win — you remove the tier’s best special wall and gain momentum at the same time.

4. Curse Snorlax (set up on it)

Snorlax clicking Curse while Blissey is in is one of the cleanest setups in the game: Seismic Toss is a flat 100 that Snorlax shrugs off and Curse-boosted Body Slam (Normal, physical) climbs out of Blissey’s ability to ever 3HKO back. Once Snorlax is +2/+3 it simply walks through the soft Defense, and Blissey can’t break the Sub or out-damage the Lefties recovery. Blissey’s only real disruption is Thunder Wave (if it’s the Utility set) — so Curse Snorlax wants to come in after you’ve forced Blissey to click something else, or pack a way to play around the paralysis.

5. Spikes + forced switches

Spikes is the only entry hazard in Gen 3, and Blissey-centered teams switch constantly (Blissey itself pivots to absorb special hits). Stack a layer or two and every Blissey entry costs 1/8–1/4. Pair Spikes with breakers that force it out and the chip compounds; eventually Blissey is in OHKO range for a Boom or a CB hit it would otherwise survive. Spikes also closes the math on the Dugtrio trap (chip turns a 2HKO into a OHKO inside Arena Trap).

What does NOT work

• Special attacks. This is the whole point — do not try to wear it down with Thunderbolt/Ice Beam/Fire Blast/Hydro Pump. It Soft-Boils through everything and Seismic-Tosses or paralyzes you while you flail — and against a Calm Mind Blissey, every special hit you trade is a turn it banks toward sweeping you back.
• Ghost-type moves (Shadow Ball). Ghost hits Normal for 0× — Blissey is flatly immune. Gengar/Snorlax/Metagross Shadow Ball does nothing to it; that’s why those mons bring Explosion or Focus Punch for the Blissey matchup, not their Ghost STAB.
• Out-stalling it. Soft-Boiled + Natural Cure + Leftovers wins every patience contest, and a Calm Mind variant just gets stronger the longer you let it sit. You go through it physically, not around it slowly.

Checks & counters (to Blissey, i.e. your tools)

These are the pieces that beat Blissey — read this as your shopping list when building aggressive offense:

Trappers / removal:

• Dugtrio — Arena Trap + Beat Up + Earthquake traps and removes it outright. The premier answer; build around it.

Physical breakers (its Defense can’t cope):

• Tyranitar — CB Focus Punch (Fighting 2×) or even Rock Slide pressure; also the sand chip wears Blissey 1/16 a turn (it’s not Rock/Ground/Steel).
• Heracross — Megahorn / CB Brick Break (Fighting 2×) is among the hardest single hits Blissey ever faces.
• Medicham — Pure Power Brick Break / Focus Punch (Fighting 2×) two-shots it through the soft Defense.
• Metagross — CB Meteor Mash neutral 2HKO, or Explosion to delete it on tempo.

Boom / setup:

• Gengar / Metagross / Snorlax Explosion / Self-Destruct — Defense-halving Normal hit (1×) that the soft physical side can’t survive.
• Curse Snorlax — sets up on it and walks through the chip.

Passive:

• Spikes (Skarmory, Cloyster, Forretress) + repeated forced switches — Blissey pivots a lot; the hazard chip is real and compounds with everything above.

★ Offense angle

Blissey is the most important Pokémon in this guide that you will never put on your team. Internalize the asymmetry: it is a brick wall on the special side and tissue paper on the physical side. Aggressive offense in ADV is, to a large degree, the art of attacking Blissey from the physical angle while your special attackers force the switches that put it in range.

Concretely, your team-building checklist:

1. Always carry a physical Blissey-breaker. A CB Fighting-type (Heracross, Medicham, Tyranitar Focus Punch) or a Boom user. If your team is all special attackers, you lose to Blissey by default — it walls your entire offense. This is the #1 way aggressive ADV teams fall apart, and it is entirely a building error.

2. Run Dugtrio if you can fit it. Trapping and removing Blissey is so valuable that an entire archetype (ZapDug, see 06-sample-teams) is built around it — kill the wall once and your Zapdos/Suicune/Starmie special attackers sweep the rest.

3. Pack Explosion somewhere. Metagross/Gengar/Snorlax Boom is a tempo button that removes Blissey and gains you the switch. The Defense-halving mechanic makes it lethal even though Normal is only neutral on Normal.

4. Twin breakers that Blissey can’t both answer. Pair a physical breaker (which Blissey loses to) with a special breaker (which Blissey beats one-on-one). Blissey can only be in one place; forcing it to choose is how you overload it. Combine with Spikes so its constant pivoting bleeds it into range.

5. Never feed it free turns. Don’t click special moves into a healthy Blissey “to chip” — you give it momentum, eat a Thunder Wave, and (against the Calm Mind set) hand it the boost that buries you. Don’t Shadow Ball it (immune). Make every interaction with Blissey a physical threat or a trap, or don’t interact at all and remove it later.

The trap to avoid: thinking you can grind Blissey down. You cannot — Soft-Boiled, Natural Cure, and Leftovers beat any attrition plan, and a Calm Mind variant turns your attrition attempt into its setup. You break it physically, you trap it with Dugtrio, or you Explode on it. Solve the Blissey question at the builder, every single time, and the rest of the special-side metagame opens up underneath it. See 04-building-aggressive-offense for how this slots into a full team.