Breloom

Grass/Fighting · Effect Spore · D tier · base 60/130/80/60/60/70 · the format’s “give me a free turn” button — a 130-Attack physical breaker that puts something to sleep with Spore (100% accuracy, the best sleep move in the game), then fires a Focus Punch off base 130 Attack to blow a hole in the SkarmBliss backbone, with Mach Punch priority to clean. Slow, frail, and gatekept by Flyers — but on the turn it lands Spore, it dictates the game.

Format role

Breloom is a physical wallbreaker and sleep disruptor, nothing else — it has no defensive job and wants none. The entire pitch starts with one move: Spore. It is the only 100%-accurate sleep move in Gen 3, and Breloom is the premier abuser of it. Spore a check, and that mon is off the field for the duration of Sleep Clause — one sleeping piece at a time, but that one piece is gone while Breloom does its work. From there Breloom backs Spore with a base 130 Attack (one of the highest physical attack stats in the format) and a trio of Fighting STABs: Focus Punch as the 150-BP nuke, Sky Uppercut as the reliable click-and-go STAB, and Mach Punch as priority to pick off chipped faster threats.

The catch — and the reason it sits at D rather than higher — is everything around the Attack stat. Breloom is slow (base 70 Speed; outrun by virtually every offensive threat), frail (60/80/60 bulk), and gatekept hard by the Flying-types that resist both STABs and OHKO back. Critically for cartridge-accurate ADV: Gen-3 Breloom has only Effect Spore — not the Gen-4 Poison Heal ability — so it cannot run the Toxic-Orb self-healing Substitute engine that defines it in later gens. Its item is Leftovers, its passive recovery is meager, and it has no Seed Bomb — Gen-3 Breloom’s only physical Grass STAB is the inaccurate Giga Drain-less attack pool, so its second STAB on a punch set comes from Mach Punch (priority Fighting) or Sky Uppercut, with Hidden Power for coverage.

What keeps Breloom relevant on aggressive offense despite the D tier is the value-per-turn of Spore. A clean Spore on the opponent’s defensive linchpin — Skarmory, Snorlax, Suicune, a wall you can’t otherwise break — buys a free Focus Punch into the switch, or a free pivot to your real wincon. Breloom is the disruptor you bring to manufacture the tempo that the rest of your aggressive core converts into a sweep.

The site embeds a TypeProfile widget above this section — use it to eyeball the full Grass/Fighting resist/weakness sheet (note the brutal 4× Flying weakness) while you read the calcs below.

Sets

Breloom runs essentially one set in ADV — max Attack / max Speed, Leftovers, Spore plus three Fighting STABs. It wants every point of power and needs all the (mediocre) Speed it can scrape. The ability is fixed (Effect Spore is its only legal Gen-3 ability), and the item is Leftovers for what little passive recovery a slow, frail mon can get.

Spore (the disruptor-breaker)

Breloom @ Leftovers
Ability: Effect Spore  ·  Jolly
EVs: 252 Atk / 4 Def / 252 Spe
- Spore
- Focus Punch
- Sky Uppercut
- Mach Punch

The signature — and effectively only — Breloom set, run by the overwhelming majority of the ladder. The sequence is: Spore something to sleep, then attack into the gap. Focus Punch is a 150-BP physical Fighting nuke for when you read a switch or a passive turn; Sky Uppercut is the reliable click-and-go Fighting STAB you fall back on when you can’t afford the Focus-Punch flinch/switch risk; and Mach Punch is the Gen-3-legal priority STAB that picks off weakened faster threats and revenge attempts (no Choice Scarf exists in Gen 3, but Mach Punch still snipes chipped Flyers and frail revengers). Jolly maxes out Breloom’s mediocre Speed to creep more of the base-70 tier; Adamant is the legal alternative if you want more raw power at the cost of a few Speed creeps. Leftovers is the only passive recovery available — Poison Heal does not exist in Gen 3 and Toxic Orb is not a legal item, so this is the cartridge-accurate engine, not the modern Poison Heal version. Seed Bomb does not exist in Gen 3 either: there is no good physical Grass STAB here, so the set is mono-Fighting offense plus Spore, leaning on the fact that Fighting alone is hugely threatening to the format’s Normal/Rock/Dark/Steel-leaning backbone.

What it does

Breloom is a disruptor and a breaker — it trades a sleep and a chunk of HP for a hole in the opposing team. Its value is the Spore + Focus Punch sequence landing on the right target.

The Spore. This is the whole reason Breloom is on the team. 100%-accurate sleep is the single most disruptive thing you can do in a turn, and Breloom is the most reliable deliverer of it. Spore the opposing wall or revenge killer, and under Sleep Clause that mon is removed from play while it snoozes — long enough to fire a free Focus Punch into the switch, or to bring in a teammate that the now-sleeping mon was meant to check. Breloom doesn’t out-stat the field; it removes a defender from the math and attacks into the gap.

The break. Focus Punch is a 150-BP Fighting hit off base 130 Attack, and Fighting is super-effective across the format’s defensive spine. It is a colossal 4× into Tyranitar (Fighting hits Rock and Dark, 2× × 2×) — a clean OHKO on the Sand-setter that anchors so many teams. It is 2× into both Snorlax and Blissey (both Normal), so Breloom is one of the cleaner physical answers to the SkarmBliss special core — it attacks the physical side that Blissey can’t defend. And it is 2× into Magneton (Fighting into Electric/Steel). Against the neutral field, a clean Focus Punch off base 130 is a 2HKO-to-OHKO on most non-resistant targets.

The Spore + Punch read. Spore forces a switch, and that switch is where the break happens. Spore the special wall, and on the incoming mon you have a choice: Focus Punch the predicted switch-in for the 150-BP nuke, or click Sky Uppercut when you’d rather not gamble on the Focus-Punch turn order (Focus Punch fails if Breloom is hit first). Against passive or special-leaning teams that can’t outpace and OHKO Breloom, this Spore-then-punch sequence pries open the back line a hit at a time. The cartridge-accurate Gen-3 version leans on Leftovers for what little recovery a frail breaker can get — Poison Heal does not exist here — so you spend the Spore deliberately and pick the right punch for the read rather than grinding behind a Substitute the canonical set does not run.

A note on its defensive profile, since the weaknesses define how you both use and beat it: Grass/Fighting is 4× weak to Flying (Flying hits Grass 2× × Fighting 2×), and 2× weak to Fire, Ice, Poison, and Psychic. On the plus side it resists Grass, Water, Ground, Electric, Rock, and Dark (all 0.5×) — a genuinely useful defensive list that lets it switch into the occasional Earthquake, Rock Slide, or Crunch — and is neutral to Normal, Bug, Fighting, and Ghost. But with 60/80/60 bulk and base 70 Speed, those resistances rarely matter: anything with a Flying, Fire, Ice, Psychic, or Poison move and a Speed advantage revenges it before it acts. Breloom breaks; it does not tank.

Load-bearing interactions

These are the matchups that decide whether Breloom gets to do its job. Effectiveness multipliers are computed against the Gen-3 chart; see the calc reference for damage mechanics.

• Focus Punch vs Tyranitar — 4× delete. Fighting is super-effective on both Rock and Dark, so Focus Punch is 4× into Tyranitar. A clean Focus Punch off base 130 Attack OHKOs every standard TTar spread — and removing the Sand-setter is one of the highest-value things any breaker can do. The wrinkle: TTar’s own Rock Slide / Crunch threaten Breloom back, so you want the kill already set up by a Spore on the turn before, not a raw click into a healthy TTar.
• Focus Punch vs the special core. Fighting is 2× into Blissey and Snorlax (both Normal). Breloom is one of the cleanest physical breakers of the SkarmBliss backbone because Blissey’s enormous special bulk is irrelevant — Focus Punch attacks the physical side that Blissey cannot defend, and a Spored special wall can’t Seismic Toss or Toxic you back while it snoozes.
• Grass coverage, where it exists. If a set runs Hidden Power Grass or a Grass attack, it is a huge 4× into Swampert (Grass hits Water and Ground) and 2× into Suicune and Starmie — the bulky Waters that wall most physical attackers. This is Breloom’s theoretical niche over Heracross. But remember the set above carries no Seed Bomb (it’s a Gen-4 move) and leans Fighting-mono; Grass coverage on Breloom in Gen 3 means Hidden Power Grass off its weak base-60 Special Attack, so it’s a soft hit at best.
• The Skarmory wall — why this mon is conditional. Skarmory (Steel/Flying) resists Grass at 0.25× (Grass 0.5× into Steel × 0.5× into Flying) and is only neutral to Focus Punch (Fighting 2× into Steel × 0.5× into Flying = 1×) off Breloom’s base-130 Attack — which is still a real chunk, but Skarmory simply Roars Breloom out and sets Spikes in its face. More to the point, you can Spore Skarmory to disable it for a turn, but you can’t break it efficiently. Skarmory walls the break; it’s the gatekeeper you bring a Magneton for.
• The Flying-type problem. Breloom is 4× weak to Flying, so any Salamence / Aerodactyl Hidden Power Flying or Drill Peck, Zapdos Hidden Power Flying / Drill Peck, or Gyarados Hidden Power Flying obliterates it. Worse, these mons resist or neutralize Breloom’s STABs: Focus Punch is 0.5× into Salamence (Fighting into Dragon/Flying) and 0.5× into Zapdos (Fighting into Electric/Flying), and they’re all faster. They switch in, eat the punch, and OHKO back.
• The Gengar wall. Gengar (Ghost/Poison) is immune to Focus Punch (Fighting 0× into Ghost) — Breloom’s main STAB does literally nothing. Gengar’s Levitate is irrelevant here since Breloom has no Ground move, but the point stands: Gengar walks in on a Focus Punch for free, then OHKOs with a 2× special Psychic (Psychic into Grass/Fighting) or Ice Punch (2×). Gengar is faster (base 110) and a hard answer to any Focus-Punch-locked Breloom. (You can still Spore Gengar, but that just trades — it wakes and kills you next time.)

Counters & checks

Breloom has clean, hard answers — which is why the entire gameplan is to spend the Spore on the right target and accept that the mon itself is a one-shot disruptor, not a long-game piece.

• Flying-types — Salamence / Aerodactyl / Zapdos / Gyarados. The 4× Flying weakness plus the STAB resistance makes these the textbook answers: any Hidden Power Flying / Drill Peck OHKOs Breloom, they’re all faster, and Salamence/Gyarados Intimidate softens the Focus Punch on the switch. They cannot switch into a Spore (nothing can without a Lum/Chesto or sleep absorber), but once Breloom is locked into attacking, they revenge it for free.
• Gengar — the immunity wall. Immune to Focus Punch (Fighting 0× into Ghost), faster at base 110, and OHKOs back with 2× Psychic or 2× Ice Punch. The cleanest non-sleep answer to a Focus-Punch Breloom — though it, too, must respect the Spore.
• Anything faster with a 2× move. Breloom’s base 70 Speed is its undoing. Starmie (Ice Beam, 2×; Psychic, 2×), Jirachi (Psychic / Fire Punch, 2×), Charizard (Fire Blast, 2×), and any Fire/Ice/Psychic/Flying attacker over base 70 revenges it before it can loop. Even a Metagross Meteor Mash (neutral, but off base 135 Attack) overwhelms its frail body.
• Sleep Clause + sleep fodder. Because only one mon can sleep at a time, an opponent who already has something asleep (their own Rest user, or a mon Breloom slept earlier) neutralizes Spore entirely — Breloom without Spore is just a slow, frail 130-Attack mon that gets revenged. Sleep-absorbing or already-statused pivots blunt its core trick.
• Phazers. Skarmory’s Roar (and any Roar/Whirlwind user) drags Breloom out before it can fire its punch and resets the Spore-then-break sequence, while taking Focus Punch neutrally and Grass at 0.25×. Phaze on the Spore turn and Breloom has to start the read over.
• Faster scarf-equivalents — there are none, but there’s priority. Gen 3 has no Choice Scarf, so nothing “scarfs” past Breloom — but Breloom is so slow that the standard speed tier already outruns it. The flip side: Breloom’s own Mach Punch is its only way to act first, so it can snipe a chipped revenge killer that thinks it’s safe.

★ Offense angle

On aggressive offense, Breloom is a tempo grenade, not a wincon. You don’t build the team around it; you slot it as the piece that manufactures a free turn for the pieces you did build around. The frame is simple: Spore removes a defender, and your real breaker walks into the gap.

Concrete lines:

• Spore the wall your team can’t break, then bring the breaker that wall was meant to stop. If the opponent’s Suicune or Skarmory is the only thing holding back your Tyranitar, Salamence, or Metagross, Spore it — now it’s asleep for several turns and your breaker sets up or clicks freely. Breloom’s job is to delete a turn of defense, not to win the long game.
• Use the Spore set as a SkarmBliss-backbone breaker. Spore one of the special walls, then Focus Punch the Blissey/Snorlax core from the physical side (2× into both) — and 4× into Tyranitar if it shows up. The punch is a 150-BP nuke off base 130 Attack, and a Spored wall can’t status you back while it sleeps. It punishes exactly the passive cores that aggressive offense most wants to crack.
• Treat it as a one-and-done breaker, not a sweeper. There’s no boosting move and no Sub — its whole game is Spore a check, then read the switch with Focus Punch (max power) or Sky Uppercut (no turn-order gamble). Pick the punch for the read, take your kill, and accept it’ll often trade itself for the hole it makes. Mach Punch is the fall-back priority to snipe a chipped revenge killer on the way down.
• Pair it with the Steel-removal engine so the Flyers are the only thing left. Breloom’s worst enemies (Skarmory and the Flyers) overlap with the things your Magneton/Dugtrio trappers already remove. Trap the Steel, chip the Flyers, and Breloom’s Spore + Focus Punch sequence opens the door for the back half (see common cores).
• Respect that it’s slow and frail — lead or pivot it in, never raw-switch it into a faster attacker. Breloom dies to the things aggressive offense already pressures: Salamence, Gengar, Aerodactyl, Zapdos, Starmie. Bring it in on a forced switch or a slow pivot, spend the Spore, and accept that it’s often a one-trick piece — that one trick is worth a teamslot on a build that can convert the free turn.

Breaking their Breloom with your offense: keep a healthy Flyer (Salamence, Aerodactyl, Zapdos, Gyarados) or Gengar alive and never give Breloom a free Spore on the piece you need. Sacrifice a low-value mon to the Spore if you must, then revenge Breloom with a Flying/Fire/Ice/Psychic hit — it’s slow enough that almost any offensive answer outruns it. Once it’s spent its Spore it’s just a slow, frail 130-Attack mon locked into reading your switch; bring the Flyer or Gengar in on the punch and OHKO back.

Top teammates & cores

• Breloom + Magneton. Magneton traps and deletes Skarmory — the Steel that walls Breloom’s break and Roars it out. With Skarmory gone, Spore + Focus Punch grinds the rest of the backbone unimpeded. The classic “trap the Steel, open the Fighting break” engine (see common cores).
• Breloom + Dugtrio. Dugtrio traps and removes the Gengar and weakened Flyers that hard-wall Breloom, clearing its fast checks. A trapping double-team: strip the immunity wall and the revenge killers, then let the disruptor do its work.
• Breloom + a fast breaker (Salamence / Tyranitar / Metagross). The whole point of Spore is to free a turn for a real wincon. Pair Breloom with a setup or Choice-Band breaker that the slept mon was supposed to check — Spore the check, sweep with the breaker. Breloom and DD/CB breakers share almost no checks (Breloom hates Flyers; the breakers threaten them).
• Breloom + Suicune / bulky pivots. A slow pivot or a bulky Water gives Breloom safe entries (it’s slow and frail, so it needs a cushion to come in), and its Grass/Fighting resistances let it switch into the Ground/Rock/Electric hits those teammates dislike.

See also

• Cores & teams: common cores, sample teams, building aggressive offense.
• Key matchups: Skarmory, Magneton, Gengar, Tyranitar, Salamence, Heracross, Dugtrio.
• Mechanics: Spore, Sleep Clause & status, Effect Spore, priority & crits, viability tiers.