The Weed Pokemon. Gloom sits between Oddish and Vileplume waiting for a Leaf Stone. Grass/Poison is common in Gen 1 and doesn't stand out.
405HP60Attack65Defense70Speed40Sp.Def85Sp.Atk85
Oddish
Gloom
Vileplume
Weak to
Mixed
Trick Room
40Speed · Very Slow

Is Gloom Good in Red & Blue Playthrough?

Handles itself well enough in the mid-game. Needs a Leaf Stone to reach Vileplume, which is where the real value is. No reason to stay here longer than you have to.

StrongGoodEvenToughBadSGETTEEGGGBEEBrockGym 1OddishCatchableMistyGym 2GloomEvolveSurgeGym 3ErikaGym 4VileplumeEvolveKogaGym 5SabrinaGym 6BlaineGym 7GiovanniGym 8LoreleiE4BrunoE4AgathaE4LanceE4BlueChamp*
Brock
Gym 1
Strong

Oddish resists most of Brock's coverage and hits back hard.

Easy KO
Geodude
Lv 12
RockGround
Rock Head
TackleDefense Curl
Easy KO
Onix
Lv 14
RockGround
Rock Head
TackleScreechBide
Misty
Gym 2
Good

Oddish has the type edge here and should clean up Misty's team.

You Win
Staryu
Lv 18
Water
Illuminate
TackleWater Gun
You Win
Starmie
Lv 21
WaterPsychic
Illuminate
TackleWater GunBubble Beam
Lt. Surge
Gym 3
Even

Gloom trades roughly evenly with Lt. Surge's team.

You Win
Voltorb
Lv 21
Electric
Soundproof
TackleScreechSonic Boom
You Win
Pikachu
Lv 18
Electric
Static
Thunder ShockGrowlThunder WaveQuick Attack
Even
Raichu
Lv 24
Electric
Static
Thunder ShockGrowlThunderbolt
Erika
Gym 4
Tough

Erika's typing presses Gloom's defenses.

Risky
Victreebel
Lv 29
GrassPoison
Chlorophyll
Razor LeafWrapPoison PowderSleep Powder
Risky
Tangela
Lv 24
Grass
Chlorophyll
ConstrictBind
Risky
Vileplume
Lv 29
GrassPoison
Chlorophyll
Petal DancePoison PowderMega DrainSleep Powder
Koga
Gym 5
Tough

Koga's typing presses Vileplume's defenses.

Even
Koffing
Lv 37
Poison
Levitate
TackleSmogSludgeSmokescreen
Even
Muk
Lv 39
Poison
Stench
DisablePoison GasMinimizeSludge
Even
Koffing
Lv 37
Poison
Levitate
TackleSmogSludgeSmokescreen
Risky
Weezing
Lv 43
Poison
Levitate
SmogSludgeToxicSelf Destruct
Sabrina
Gym 6
Even

Vileplume trades roughly evenly with Sabrina's team.

Even
Kadabra
Lv 38
Psychic
Synchronize
DisablePsybeamRecoverPsychic
Even
Mr Mime
Lv 37
Psychic
Soundproof
ConfusionBarrierLight ScreenDouble Slap
Even
Venomoth
Lv 38
BugPoison
Shield Dust
Poison PowderLeech LifeStun SporePsybeam
Risky
Alakazam
Lv 43
Psychic
Synchronize
PsybeamRecoverPsywaveReflect
Blaine
Gym 7
Even

Vileplume trades roughly evenly with Blaine's team.

Even
Growlithe
Lv 42
Fire
Intimidate
EmberLeerTake DownAgility
Even
Ponyta
Lv 40
Fire
Run Away
Tail WhipStompGrowlFire Spin
Even
Rapidash
Lv 42
Fire
Run Away
Tail WhipStompGrowlFire Spin
Risky
Arcanine
Lv 47
Fire
Intimidate
RoarEmberFire BlastTake Down
Giovanni
Gym 8
Good

Vileplume has the type edge here and should clean up Giovanni's team.

Easy KO
Rhyhorn
Lv 45
GroundRock
Lightning Rod
StompTail WhipFury AttackHorn Drill
Easy KO
Dugtrio
Lv 42
Ground
Sand Veil
GrowlDigSand AttackSlash
Even
Nidoqueen
Lv 44
PoisonGround
Poison Point
ScratchTail WhipBody SlamPoison Sting
Even
Nidoking
Lv 45
PoisonGround
Poison Point
TackleHorn AttackPoison StingThrash
Easy KO
Rhydon
Lv 50
GroundRock
Lightning Rod
StompTail WhipFissureHorn Drill
Lorelei
Elite Four
Good

Vileplume has the type edge here and should clean up Lorelei's team.

Easy KO
Dewgong
Lv 54
WaterIce
Thick Fat
GrowlAurora BeamRestTake Down
Easy KO
Cloyster
Lv 53
WaterIce
Shell Armor
SupersonicClampAurora BeamSpike Cannon
Easy KO
Slowbro
Lv 54
WaterPsychic
Oblivious
GrowlWater GunWithdrawAmnesia
Even
Jynx
Lv 56
IcePsychic
Oblivious
Double SlapIce PunchBody SlamThrash
You Win
Lapras
Lv 56
WaterIce
Water Absorb
Body SlamConfuse RayBlizzardHydro Pump
Bruno
Elite Four
Good

Vileplume has the type edge here and should clean up Bruno's team.

Easy KO
Onix
Lv 53
RockGround
Rock Head
Rock ThrowRageSlamHarden
You Win
Hitmonchan
Lv 55
Fighting
Keen Eye
Ice PunchThunder PunchMega PunchCounter
You Win
Hitmonlee
Lv 55
Fighting
Limber
Jump KickFocus EnergyHigh Jump KickMega Kick
Easy KO
Onix
Lv 56
RockGround
Rock Head
Rock ThrowRageSlamHarden
You Win
Machamp
Lv 58
Fighting
Guts
LeerFocus EnergyFissureSubmission
Agatha
Elite Four
Bad

Agatha's Pokemon outpace and outclass Vileplume here.

Avoid
Gengar
Lv 56
GhostPoison
Cursed Body
Confuse RayNight ShadeHypnosisDream Eater
Risky
Golbat
Lv 56
PoisonFlying
Inner Focus
SupersonicConfuse RayWing AttackHaze
Avoid
Haunter
Lv 55
GhostPoison
Levitate
Confuse RayNight ShadeHypnosisDream Eater
Risky
Arbok
Lv 58
Poison
Intimidate
BiteGlareScreechAcid
Avoid
Gengar
Lv 60
GhostPoison
Cursed Body
Confuse RayNight ShadeToxicDream Eater
Lance
Elite Four
Even

Vileplume trades roughly evenly with Lance's team.

Even
Gyarados
Lv 58
WaterFlying
Intimidate
Dragon RageLeerHydro PumpHyper Beam
Even
Dragonair
Lv 56
Dragon
Shed Skin
AgilitySlamDragon RageHyper Beam
Even
Dragonair
Lv 56
Dragon
Shed Skin
AgilitySlamDragon RageHyper Beam
Even
Aerodactyl
Lv 60
RockFlying
Rock Head
SupersonicBiteTake DownHyper Beam
Risky
Dragonite
Lv 62
DragonFlying
Inner Focus
AgilitySlamBarrierHyper Beam
Blue
Champion
Even

Vileplume trades roughly evenly with Blue's team.

Risky
Pidgeot
Lv 61
NormalFlying
Keen Eye
WhirlwindWing AttackSky AttackMirror Move
Even
Alakazam
Lv 59
Psychic
Synchronize
PsybeamRecoverPsychicReflect
Easy KO
Rhydon
Lv 61
GroundRock
Lightning Rod
Tail WhipFury AttackHorn DrillLeer
Even
Gyarados
Lv 61
WaterFlying
Intimidate
Dragon RageLeerHydro PumpHyper Beam
Even
Arcanine
Lv 63
Fire
Intimidate
RoarEmberLeerTake Down
Even
Venusaur
Lv 65
GrassPoison
Overgrow
Razor LeafGrowthMega DrainSolar Beam

Catch Oddish

Available after Badge 1
Type
GrassPoison
Tier
F

Catch Oddish on Route 24 (walking, Lv 12-14, common).

View Oddish locations

Evolve Oddish to Gloom

Level 21
Type
GrassPoison
Tier
E

Oddish evolves into Gloom at Level 21. Your Oddish should hit Level 21 before you reach Lt. Surge, at typical leveling pace.

View Gloom locations

Recommended Moves

  • STARTING (Lv 21)
    • LV 21GrassStun SporePower —Accuracy 75%PP 30
  • After Misty
    • HM01NormalCutPower 50Accuracy 95%PP 30S.S. Anne
  • After Lt. Surge
    • TM10NormalDouble-EdgePower 100Accuracy 100%PP 15Rocket Hideout
    • TM09NormalTake DownPower 90Accuracy 85%PP 20Silph Co.
    • LV 28PoisonAcidPower 60Accuracy 100%PP 30
  • After Erika
    • LV 38GrassPetal DancePower 105Accuracy 100%PP 20
    • LV 52GrassSolar BeamPower 180Accuracy 100%PP 10

Evolve Gloom to Vileplume

Use Leaf Stone
Type
GrassPoison
Tier
E

Gloom evolves into Vileplume with a Leaf Stone. You can buy the Leaf Stone at the Celadon Department Store on the 4th floor (₽2,100).

Recommended Moves

How to Get Gloom in Red & Blue

Four rare wild spots dot the Red-side routes, all mid-level. Gloom is Red-only, the bridge between an Oddish and the Leaf Stone that finishes the line.

Red Exclusive: Trade with Blue for Weepinbell. See every Red & Blue version exclusive

4 locations to catch Gloom

Encountered via tall grass encounters

Badge 6

Where To Catch Gloom in RB

Oddish gets you Gloom sooner: catch it (before Badge 2) and evolve it at Lv 21. Wild Gloom first appears at Route 12 (after Badge 6).

  1. Vileplume
    Step 3Evolve into Vileplume

Want the exact numbers? Work out your catch odds in Red & Blue for Gloom.

Gloom Weakness

Gloom is weak to Bug, Fire, Ice, Flying, and Psychic. Watch out for Bug attacks, those deal 4x damage. The Grass/Poison typing picks up 4 resistances to work with.

Gloom Weakness and Resistance Chart
DamageTypes
4x (Critical)Bug
2x (Weak)Fire, Ice, Flying, Psychic
0.5x (Resist)Water, Electric, Fighting
0.25x (Resist)Grass
Gen I Type Chart
  • Only 15 types exist — Dark, Steel, and Fairy are absent
  • Ghost has no effect on Psychic (a known bug, fixed in Gen II)
  • Special stat governs both offense and defense — no Sp.Atk / Sp.Def split

What is Gloom Weak Against

Fragile
5Weak
4Resist
0Immune
Score-7
4xCritical
¼xResist
0xImmune
None

What is Gloom Strong Against

5Strong
1Resisted
0Immune
Score+4
½xResisted
0xImmune
None

Best Pokemon Against Gloom

Charizard
Charizard
FireFlying
B
Hypno
Hypno
Psychic
C
B
Exeggutor
Exeggutor
GrassPsychic
S
Lapras
Lapras
WaterIce
B

Gloom Evolutions

Gloom sits between Oddish and Vileplume in this three-stage chain. A Grass/Poison type at 405 stats that can't breed. Special has grown the most so far (+20), but there's still another 85 stats to gain in the final evolution. View every chain in the Evolution Chart.

How to Evolve

3 Forms
Stat Comparison 3 Stages
Oddish
GrassPoison
Gloom
GrassPoison
Vileplume
GrassPoison
HP
45
60+15
75+15
ATK
50
65+15
80+15
DEF
55
70+15
85+15
SP.ATK
75
85+10
110+25
SP.DEF
65
75+10
90+15
SPE
30
40+10
50+10
BST
320F-Tier
395E-Tier+75
490E-Tier+95
ROLE
Balanced
Trick Room
Attacker
TYPE
Special
Special
Special
Breeding not available · Introduced in Gen 2

RB Gloom Best Moveset

Grass/Poison middle stage with 85 Special and MoveSleep Powder. Sleep utility keeps Gloom slightly relevant, but Vileplume does the same job with better stats. A stepping stone, not a destination.

Best Build

Experimental
Utility
Ability
Unknown
Item
None
Best Nature for Gloom
HardyNEUTRAL

Utility Moveset

  • Sleep PowderSTAB
  • Stun SporeSTAB
  • Solar BeamSTAB
  • Mega DrainSTAB

Moves List

Most of Gloom's flexibility comes from TMs. Same-type output runs through Petal Dance and Solar Beam, but Normal and the rest of the TM pool push it from predictable to genuinely threatening.

Level-Up Moves

Lv 1
Absorb
A3010020Grass
Lv 1
Poison Powder
——7535Poison
Lv 1
Stun Spore
B—7530Grass
Lv 15
Poison Powder
——7535Poison
Lv 17
Stun Spore
B—7530Grass
Lv 19
Sleep Powder
S—7515Grass
Lv 28
Acid
D6010030Poison
Lv 38
Petal Dance
B18010020Grass
Lv 52
Solar Beam
B18010010Grass

TM Moves

All 14 TMs are obtainable before the Elite Four

TM
TM34D——10Normal
HM01
CutS.S. Annebadge 2
—509530Normal
TM32
Double TeamSafari Zonebadge 3
———15Normal
TM10
Double-EdgeRocket Hideoutbadge 3
A12010015Normal
TM21B6010010Grass
TM31
MimicSaffron Citybadge 5
D——10Normal
TM20
RageRoute 15badge 3
D2010020Normal
TM33
ReflectKanto Power Plantbadge 3
C——20Psychic
TM44
RestS.S. Annebadge 2
C——10Psychic
TM22
Solar BeamPokémon Mansionbadge 6
B18010010Grass
TM50
SubstituteRocket Game Cornerbadge 3
C——10Normal
TM03
Swords DanceSilph Co.badge 5
A——30Normal
TM09
Take DownSilph Co.badge 3
D908520Normal
TM06C—9010Poison

Tutor Moves

Gloom can't learn any Tutor moves

Base Stats

Base Stats
Above
HP60
C
Attack65
C
Defense70
C
Sp. Atk85
C
Sp. Def85
C
Speed40
D
Total405
Details
Catch Rate
Moderate120 / 255
Growth Rate
Medium Slow1.06M XP
Height0.8 m
Weight8.6 kg
Base XP138
EV Yield
HPAtkDefSpA+2SpDSpe
Special Attack training target
Pokedex Entry

The fluid that oozes from its mouth isn’t drool. It is a nectar that is used to attract prey.

Pokemon Red / Pokemon Blue

Gloom Red & Blue Guide

  • In Red & Blue, for a casual playthrough, Gloom works as a placeholder. Grass/Poison coverage is useful early. The real payoff is Vileplume. That's where the stats start mattering.

  • In Red & Blue, Gloom plays as a trick room. It's slow, so Trick Room or priority moves are key. so pick your spots carefully.

Game Availability

Present since Red & Blue, Gloom appears in 20 games spanning 9 generations. Gen 1 originals like Gloom have the longest track record of availability in the series.

Explore

Was this page helpful?
Thanks for your feedback!
Want to tell us more?
What was most useful?
What could be improved?
Thanks for your feedback