
Is Weezing Good in Ruby & Sapphire Playthrough?
AbilityLevitate removes the Ground weakness entirely, leaving Weezing with only Psychic as a vulnerability. Poison typing is still niche offensively, but the defensive improvement is massive. Native to Hoenn and genuinely usable through the E4 now that Earthquake can't touch it.
Roxanne's typing presses Koffing's defenses.
Koffing has the type edge here and should clean up Brawly's team.
Wattson's typing presses Koffing's defenses.
Koffing trades roughly evenly with Flannery's team.
Norman's typing presses Koffing's defenses.
Koffing trades roughly evenly with Winona's team.
Tate & Liza's team hits Weezing's weaknesses hard.
Weezing trades roughly evenly with Wallace's team.
Weezing has the type edge here and should clean up Sidney's team.
Phoebe's team hits Weezing's weaknesses hard.
Weezing has the type edge here and should clean up Glacia's team.
Weezing trades roughly evenly with Drake's team.
Steven's team hits Weezing's weaknesses hard.
Catch Koffing
Catch Koffing in Fiery Path (walking, Lv 15-16, common).
Recommended Moves
- LV 17NormalSelf-DestructPower 200Accuracy 100%PP 5
- After Brawly
- TM35FireFlamethrowerPower 95Accuracy 100%PP 15Mauville Game Corner
- TM24ElectricThunderboltPower 95Accuracy 100%PP 15Mauville Game Corner
- LV 21PoisonSludgePower 98Accuracy 100%PP 20
- After Norman
- TM36PoisonSludge BombPower 135Accuracy 100%PP 10Dewford Town
- TM38FireFire BlastPower 120Accuracy 85%PP 5Lilycove Department Store
- TM25ElectricThunderPower 120Accuracy 70%PP 10Lilycove Department Store
- LV 41NormalExplosionPower 250Accuracy 100%PP 5
Evolve Koffing to Weezing
Koffing evolves into Weezing at Level 35. Your Koffing should hit Level 35 before you reach Tate & Liza, at typical leveling pace.
Recommended Moves
- STARTING (Lv 35)
- LV 35PoisonSludgePower 98Accuracy 100%PP 20
- LV 35NormalSelf-DestructPower 200Accuracy 100%PP 5
- After Brawly
- TM35FireFlamethrowerPower 95Accuracy 100%PP 15Mauville Game Corner
- TM24ElectricThunderboltPower 95Accuracy 100%PP 15Mauville Game Corner
- After Norman
- TM36PoisonSludge BombPower 135Accuracy 100%PP 10Dewford Town
- TM15NormalHyper BeamPower 150Accuracy 90%PP 5Lilycove Department Store
- TM38FireFire BlastPower 120Accuracy 85%PP 5Lilycove Department Store
- LV 44NormalExplosionPower 250Accuracy 100%PP 5
How to Get Weezing in Ruby & Sapphire
Weezing comes from leveling a Fiery Path Koffing to 35, with no wild ones floating around on their own.
Wild Weezing may be holding when caught:
Catch Koffing at any of these 1 spot to eventually evolve into Weezing.
Encountered via tall grass encounters
- 1Catch Koffing
- 2Evolve Weezingat Lv.35
How to Obtain Weezing in RS
Step 2Weezing ✓BREEDINGAvailableLeave a compatible parent at the Pokemon Day Care to receive a Koffing egg.
How to Get Shiny Weezing in Ruby & Sapphire
Weezing never turns up wild, so hunt a shiny Koffing in the Fiery Path and evolve it into Weezing. Compare Shiny Weezing odds across every game
Ruby & Sapphire Shiny Weezing Calculator
2 MethodsBoth methods here share the same odds, about 1 in 8,192 on each try. Pick whichever fits how you play.
Full Odds: Walk through grass, surf, or fish. Every encounter is its own independent shiny roll.
Breeding: Hatch eggs of this line; each egg rolls at the base shiny rate (no Masuda before Gen IV).
How many you have done, or plan to do.
| Chance | Encounters | Time |
|---|---|---|
| 10%lucky few | 864-- | -- |
| 25%one in four | 2,357-- | -- |
| 50%coin flip | 5,678-- | -- |
| 90%very likely | 18,862-- | -- |
Time assumes -- at your pace and does not change your shiny odds.
How is this calculated?
Every encounter has the same shiny chance, the Shiny Odds Per Try shown above. Each one is a separate roll that does not care how many you have already done, so the more you hunt, the higher your overall chance of at least one shiny. The formula below turns your odds and your number of tries into that combined chance.
chance after N tries = 1 − (1 − p)^N, where p = 1 / odds per try
Example at 1 in 8,192 (classic full odds): about 864 encounters for a 10 percent chance, 5,678 for 50 percent, and 18,862 for 90 percent.
The table above flips that around: it shows how many encounters it takes to reach a 10, 25, 50, and 90 percent chance at your current odds. Turning on boosts like the Shiny Charm, sandwiches, or chains improves your odds, so the encounter numbers drop.
These are estimates, not promises. Most games have no pity counter, meaning no guaranteed shiny no matter how many you hunt, so even Very Likely is not guaranteed: some hunters find one early, others go well past that point.
For time estimates and charm math, open the Ruby & Sapphire shiny odds calculator with Weezing already selected.
Weezing Weakness
Type-wise, Weezing takes extra damage from Ground and Psychic. The Poison typing picks up 4 resistances to work with. Levitate grants an additional Ground immunity, reshaping the matchup chart. Weezing's physical bulk (base 120 Def) helps cushion physical weakness hits, but special attackers are the bigger threat.
| Damage | Types |
|---|---|
| 2x (Weak) | Ground, Psychic |
| 0.5x (Resist) | Grass, Fighting, Poison, Bug |
- Dark and Steel types added — Fairy does not exist yet
- Moves are Physical or Special based on type, not per move
What is Weezing Weak Against
AvgBest Pokemon Against Weezing
Gardevoir Psychic | B | |
Grumpig Psychic | C | |
Kadabra Psychic | C | |
Available Move Moves
Damage vs Weezing View Kadabra builds →Future Sight 2x151-178%KO | ||
Baltoy GroundPsychic | D | |
Available Moves Moves
Damage vs Weezing View Baltoy builds →Psychic 2x53-63% Dig 2x23-28% | ||
Weezing Evolutions
Weezing is what Koffing becomes. Breed it for Koffing eggs (average hatch time). A decent partner pool for breeding via one egg group. Eggs take an average time to hatch. The evolution from Koffing pushed Weezing to 490 total stats. HP saw the largest single gain at +25. View every chain in the Evolution Chart.
How to Evolve
Breeding
Breed with Weezing to get Koffing eggs easily using 22 partners from the Amorphous egg group. Notable egg moves include Destiny Bond, Pain Split, Psybeam and 3 more.
RS Weezing Best Moveset
120 Defense blocks physical hits, and Ground immunity through AbilityLevitate removes Poison's biggest weakness. MoveSludge Bomb fires Poison TermStab while MoveWill-O-Wisp burns attackers. MoveExplosion for the game-ending trade. Held ItemLeftovers sustains. Physical tank with Ground immunity and burn.
Best Build
Weezing best EVs are HP and Defense
Wall Moveset
- Will O Wisp
- Sludge Bomb
- Pain Split
- Explosion
Recommended Teammates
Moves List
Breeding's the move. Destiny Bond and Pain Split give Weezing options it can't learn any other way, and Normal and Fire coverage and more already covers a decent range on top of Sludge Bomb and Sludge. The egg moves push it further.
How to Read the Moves Table
Tabs
- Level-Up
- Learned by leveling up.
- TM
- Taught by a Technical Machine.
- Egg
- Inherited via breeding.
- Tutor
- NPC tutor (cost: items, BP, money).
- Reminder
- An NPC reteaches any move this Pokemon could have learned by leveling up.
- Transfer
- Carried over from an older game using Pokemon HOME.
- Event
- Given out through Mystery Gift events.
Visual Signals
CAT (Category)
How the move deals damage and which stats it uses.
A small dot on the icon's corner marks the move as contact. That triggers abilities like Static, Flame Body, Rough Skin, or Iron Barbs, plus items like Rocky Helmet and Sticky Barb.
Tier (S to D)
Each move's competitive rank in RankedBoost's system. TM, Egg, and Tutor sort by tier by default (best first). On Level-Up, click the Tier header to do the same.
PWR (Power)
Base damage. Numbers shown in a type color include STAB (base × 1.5). Hover any colored number to see the math.
— means no power (status moves) or variable power.
Sorting & Filter
Click any column header to sort. Level-Up opens with Lv 1 at the top. TM, Egg, and Tutor open with the highest-tier moves at the top.
Search filters by move name or type. The Filter button limits the list to STAB, Physical, Special, or Status moves.
Level-Up Moves
TM Moves
All 24 TMs are obtainable before the Elite Four
Egg Moves
Tutor Moves
Base Stats
WEEZING loves the gases given off by rotted kitchen garbage. This POKéMON will find a dirty, unkempt house and make it its home. At night, when the people in the house are asleep, it will go through the trash.
WEEZING alternately shrinks and inflates its twin bodies to mix together toxic gases inside. The more the gases are mixed, the more powerful the toxins become. The POKéMON also becomes more putrid.
Weezing Ruby & Sapphire Guide
Weezing is obtained in Pokemon Ruby & Sapphire by evolving Koffing under specific conditions.
Game Availability
Available since Red & Blue, Weezing appears in 20 games spanning 9 generations. Beyond its original form, it gained a Galarian form in Generation 8.
Click a game to view version-specific details
- Gen 1RBDebut

Red & Blue - Gen 1Y
Yellow - Gen 2GS

Gold & Silver - Gen 2C
Crystal - Gen 3RS

Ruby & Sapphire - Gen 3E
Emerald - Gen 3FRLG

FireRed & LeafGreen - Gen 4DP

Diamond & Pearl - Gen 4Pt
Platinum - Gen 4HGSS

HeartGold & SoulSilver - Gen 5BW

Black & White - Gen 5B2W2

Black 2 & White 2 - Gen 6XY

X & Y - Gen 6ORAS

Omega Ruby & Alpha Sapphire - Gen 7SM

Sun & Moon - Gen 7USUM

Ultra Sun & Ultra Moon - Gen 7Let's Go

Let's Go Pikachu & Eevee - Gen 8SwShGalarian

Sword & Shield - Gen 8BDSP

Brilliant Diamond & Shining Pearl - Gen 8PLA
Legends: Arceus - Gen 9SV

Scarlet & Violet - Gen 9LZA
Legends: Z-A - Gen 10WW

Winds & Waves
Explore
Where to go next after Weezing.
