Mixed
Trick Room
40Speed · Very Slow

Stats & Training

Nothing fancy in Gloom's spread. It leans mixed with Special out front. And you'll get 2 Special stat exp per KO for it. Follows a 1.06M XP medium-slow curve.

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
Abilities
Abilities were introduced in Generation III. Shown below for reference.
Chlorophyll
Doubles Speed during strong sunlight.
StenchHA
Has a 10% chance of making target Pokémon flinch with each hit.
EV Yield
HPAtkDefSpA+2SpDSpe
Special Attack training target
Pokedex Entries

Smells incredibly foul! However, around 1 out of 1,000 people enjoy sniffing its nose-bending stink.

Yellow

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
Type ChartFragile
5Weak
4Resist
0Immune
Score-7
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
4xCritical
¼xResist
0xImmune
None
How to Beat Gloom in Yellow (Best Counters)
Articuno
Articuno
IceFlying
B
Obtain MethodSeafoam Islands Interact Encounter
Available Moves
Moves
  • Sky AttackTM43
  • BlizzardTM14
  • Ice BeamTM13
  • FlyHM02
Damage vs Gloom
Sky Attack 2x
138-162%KO
Blizzard 2x
104-122%KO
Ice Beam 2x
84-100%KO
Fly 2x
90-107%KO
View Articuno builds →

Yellow Evolution

Gloom sits between Oddish and Bellossom in this 4-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
320D-Tier
395D-Tier+75
490B-Tier+95
ROLE
Balanced
Trick Room
Attacker
TYPE
Special
Special
Special
Breeding not available · Introduced in Gen 2

Yellow Gloom Best Moveset

Best Build

Gen 1 build content has limited support (no abilities, held items, or natures).

Try selecting a different game/generation filter, or check back later.

Moves

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
2010020Grass
Lv 1
Poison Powder
7535Poison
Lv 1
Stun Spore
C7530Grass
Lv 15
Poison Powder
7535Poison
Lv 17
Stun Spore
C7530Grass
Lv 19
Sleep Powder
C7515Grass
Lv 28
Acid
D4010030Poison
Lv 38
Petal Dance
B12010020Grass
Lv 52
Solar Beam
B12010010Grass

TM Moves

TM
TM34
Bide+1
10Normal
HM01
Cut
509530Normal
TM32
Double Team
15Normal
TM10
Double-Edge
C12010015Normal
TM21
Mega Drain
D4010010Grass
TM31
Mimic
10Normal
TM20
Rage
2010020Normal
TM33
Reflect
C20Psychic
TM44
Rest
C10Psychic
TM22
Solar Beam
B12010010Grass
TM50
Substitute
C10Normal
TM03
Swords Dance
C30Normal
TM09
Take Down
908520Normal
TM06
Toxic
C9010Poison

Egg Moves

Gloom doesn't have any Egg moves

Tutor Moves

Gloom can't learn any Tutor moves

How to Get Gloom in Yellow

6 encounter spots for Gloom at moderate rates starting from mid-game routes. Best and Earliest sort options below help narrow down your approach based on odds vs. Accessibility.

Where To Catch Gloom in Yellow

To get Gloom, start by catching Oddish through walking encounters at Lv. 12-58. The chain covers 2 catchable stages before reaching the final form.

  1. Oddish
    Step 1Catch Oddish
    Route 24
    Grass Lv.12-14 Route
    35%Early
    Route 25
    Grass Lv.12-14 Route
    35%Early
    Route 12
    Grass Lv.25-27 Route
    35%Mid
    Route 13
    Grass Lv.25-27 Route
    35%Mid
    Route 14
    Grass Lv.26-28 Route
    35%Mid
    Route 15
    Grass Lv.26-28 Route
    35%Mid
  2. Gloom
    Step 2Gloom
    Route 12
    Grass Lv.29 Route
    5%Mid
    Route 13
    Grass Lv.29 Route
    5%Mid
    Route 14
    Grass Lv.30 Route
    5%Mid
    Route 15
    Grass Lv.30 Route
    5%Mid
    Cerulean Cave - 1F
    Grass Lv.55 Cave
    10%Post
    Cerulean Cave - 2F
    Grass Lv.58 Cave
    5%Post
    or evolve from Oddish (Step 1)

Gloom Guide

  • At 405 BST, Gloom is firmly in pre-evolution territory. Evolve it into Vileplume before bringing it to any serious fight.

  • In Yellow, Gloom's biggest threats include Scyther (Bug), Charizard (Fire), and Cloyster (Ice), all carrying super-effective STAB moves. Scyther is the most dangerous since Bug moves deal 4x damage. Flying and Psychic-type attackers are also a problem. With 5 weakness types, most competitive teams carry at least one counter. At base 40 Speed, Gloom won't outrun any of these threats so switching to a resist is usually the safer play.

  • In Yellow, Oddish evolves into Gloom at level 21. Gloom can evolve into Vileplume and Bellossom depending on the method. Gloom is a middle-stage evolution in the Oddish line.

  • Gloom is a mixed attacker with base 65 Attack and 85 Special. Enough bulk to take a hit or two, too. Speed tells the real story. Base 40 Speed is low. Priority moves or Trick Room are the way to go. Fits the trick room role.

  • In Yellow, 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.

Game Availability

Present since Red & Blue, Gloom appears in 21 games spanning 10 generations. Gen 1 originals like Gloom have the longest track record of availability in the series.

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