Home

Discord

Games

Cards

Main Series

Tools

Game

Crystal

News

Updates for this game hub

Guides

Johto mechanics and tips

Pokédex

Stats, moves, and locations

Moves

Power, accuracy, and learners

Items

Bag and machine effects

Koffing

#114 in the Crystal Pokédex • Poison Gas Pokémon

Pokémon Crystal

If one gets close enough to it when it expels poison ous gas, the gas swirling inside it can be seen.

Pokédexes

Original Johto #114

Egg Group

Amorphous

Steps to Hatch

5,120

Effort Values Yielded

1 Def

Gender Ratio

50% male / 50% female

Capture Rate

190

Base Experience

68

Pokémon	Requires	Evolution
Koffing #114	Level 35	Weezing #115

Pokémon Crystal

Location	Method	Level	Chance	Conditions
Burned Tower Burned Tower (1F)	Walking in tall grass or a cave	14	30%	-
Burned Tower Burned Tower (B1F)	Walking in tall grass or a cave	14	30%	-
Burned Tower Burned Tower (B1F)	Walking in tall grass or a cave	16	20%	-
Burned Tower Burned Tower (B1F)	Walking in tall grass or a cave	12	5%	-
Burned Tower Burned Tower (B1F)	Walking in tall grass or a cave	16	4%	-
Team Rocket HQ	Static encounter, only one chance	21	100%	-
Team Rocket HQ	Static encounter, only one chance	21	100%	-
Team Rocket HQ	Static encounter, only one chance	21	100%	-
Team Rocket HQ	Static encounter, only one chance	21	100%	-
Team Rocket HQ	Static encounter, only one chance	21	100%	-
Team Rocket HQ	Static encounter, only one chance	21	100%	-
Team Rocket HQ	Static encounter, only one chance	21	100%	-

Hitmontop

Weezing

Koffing normal sprite

Normal

Shiny Koffing sprite

Shiny

Koffing

Poison Gas Pokémon

#114

Poison

Height

0.6 m

Weight

1 kg

Base XP

68

Abilities

Levitate Neutralizing Gas Stench

HP

40

Attack

65

Defense

95

Sp. Atk

60

Sp. Def

45

Speed

35

Total

340

Type Chart

Weaknesses

Takes 2× from

Ground

Psychic

Resistances

Takes 0.5× from

Grass

Fighting

Poison

Bug

			Class				Description
Start	Tackle		Physical	35	95	35	A full-body charge attack.
Start	Poison Gas		Status	-	55	40	A move that may poison the foe.
9	Smog		Special	20	70	20	An attack that may poison the foe.
17	Self-Destruct		Physical	200	100	5	Powerful but makes the user faint.
21	Sludge		Special	65	100	20	An attack that may poison the foe.
25	Smokescreen		Status	-	100	20	Lowers the foe's accuracy.
33	Haze		Status	-	-	30	Eliminates all stat changes.
41	Explosion		Physical	250	100	5	Very powerful but makes user faint.
45	Destiny Bond		Status	-	-	5	The foe faints if the user does.

		Class				Description
Destiny Bond		Status	-	-	5	The foe faints if the user does.
Pain Split		Status	-	-	20	Adds user & foe's HPs. Shares total.
Psybeam		Special	65	100	20	An attack that may confuse the foe.
Psywave		Special	-	80	15	An attack with variable power.
Screech		Status	-	85	40	Sharply reduces the foe's DEFENSE.

			Class				Description
TM03	Curse		Status	-	-	10	Works differently for ghost-types.
TM04	Rollout		Physical	30	90	20	Attacks 5 turns with rising power.
TM06	Toxic		Status	-	85	10	A poison move with increasing damage.
TM07	Zap Cannon		Special	100	50	5	An attack that always paralyzes.
TM10	Hidden Power		Special	1	100	15	The power varies with the Pokémon.
TM11	Sunny Day		Status	-	-	5	Boosts fire-type moves for 5 turns.
TM13	Snore		Special	40	100	15	An attack useable only while asleep.
TM17	Protect		Status	-	-	10	Foils attack that turn. It may fail.
TM20	Endure		Status	-	-	10	Always leaves at least 1HP.
TM21	Frustration		Physical	-	100	20	An attack based on lack of loyalty.
TM25	Thunder		Special	120	70	10	An attack that may cause paralysis.
TM27	Return		Physical	-	100	20	An attack that is based on loyalty.
TM32	Double Team		Status	-	-	15	Heightens evasive ness.
TM34	Swagger		Status	-	90	15	Causes confusion and raises ATTACK.
TM35	Sleep Talk		Status	-	-	10	Randomly attacks while asleep.
TM36	Sludge Bomb		Special	90	100	10	An attack that may poison the foe.
TM38	Fire Blast		Special	120	85	5	An attack that may cause a burn.
TM44	Rest		Status	-	-	5	Sleep for 2 turns to fully recover.
TM45	Attract		Status	-	100	15	Makes the opposite gender infatuated.
TM46	Thief		Physical	40	100	10	An attack that may steal a held item.

		Class				Description
Flamethrower		Special	95	100	15	An attack that may inflict a burn.
Thunderbolt		Special	95	100	15	An attack that may cause paralysis.

© 2026 dittobase.com. All rights reserved.

This website is an independent platform and is not associated with, validated, backed, or sponsored by Nintendo, Game Freak, Niantic, or The Pokémon Company.

C / Pokédex

Koffing

Koffing

#114 in the Crystal Pokédex • Poison Gas Pokémon

Pokémon Crystal

If one gets close enough to it when it expels poison ous gas, the gas swirling inside it can be seen.

Pokédexes

Original Johto #114

Egg Group

Amorphous

Steps to Hatch

5,120

Effort Values Yielded

1 Def

Gender Ratio

50% male / 50% female

Capture Rate

190

Base Experience

68

Pokémon	Requires	Evolution
Koffing #114	Level 35	Weezing #115

Pokémon Crystal

Location	Method	Level	Chance	Conditions
Burned Tower Burned Tower (1F)	Walking in tall grass or a cave	14	30%	-
Burned Tower Burned Tower (B1F)	Walking in tall grass or a cave	14	30%	-
Burned Tower Burned Tower (B1F)	Walking in tall grass or a cave	16	20%	-
Burned Tower Burned Tower (B1F)	Walking in tall grass or a cave	12	5%	-
Burned Tower Burned Tower (B1F)	Walking in tall grass or a cave	16	4%	-
Team Rocket HQ	Static encounter, only one chance	21	100%	-
Team Rocket HQ	Static encounter, only one chance	21	100%	-
Team Rocket HQ	Static encounter, only one chance	21	100%	-
Team Rocket HQ	Static encounter, only one chance	21	100%	-
Team Rocket HQ	Static encounter, only one chance	21	100%	-
Team Rocket HQ	Static encounter, only one chance	21	100%	-
Team Rocket HQ	Static encounter, only one chance	21	100%	-

Hitmontop

Weezing

Koffing normal sprite

Normal

Shiny Koffing sprite

Shiny

Koffing

Poison Gas Pokémon

#114

Poison

Height

0.6 m

Weight

1 kg

Base XP

68

Abilities

Levitate Neutralizing Gas Stench

HP

40

Attack

65

Defense

95

Sp. Atk

60

Sp. Def

45

Speed

35

Total

340

Type Chart

Weaknesses

Takes 2× from

Ground

Psychic

Resistances

Takes 0.5× from

Grass

Fighting

Poison

Bug

			Class				Description
Start	Tackle		Physical	35	95	35	A full-body charge attack.
Start	Poison Gas		Status	-	55	40	A move that may poison the foe.
9	Smog		Special	20	70	20	An attack that may poison the foe.
17	Self-Destruct		Physical	200	100	5	Powerful but makes the user faint.
21	Sludge		Special	65	100	20	An attack that may poison the foe.
25	Smokescreen		Status	-	100	20	Lowers the foe's accuracy.
33	Haze		Status	-	-	30	Eliminates all stat changes.
41	Explosion		Physical	250	100	5	Very powerful but makes user faint.
45	Destiny Bond		Status	-	-	5	The foe faints if the user does.

		Class				Description
Destiny Bond		Status	-	-	5	The foe faints if the user does.
Pain Split		Status	-	-	20	Adds user & foe's HPs. Shares total.
Psybeam		Special	65	100	20	An attack that may confuse the foe.
Psywave		Special	-	80	15	An attack with variable power.
Screech		Status	-	85	40	Sharply reduces the foe's DEFENSE.

			Class				Description
TM03	Curse		Status	-	-	10	Works differently for ghost-types.
TM04	Rollout		Physical	30	90	20	Attacks 5 turns with rising power.
TM06	Toxic		Status	-	85	10	A poison move with increasing damage.
TM07	Zap Cannon		Special	100	50	5	An attack that always paralyzes.
TM10	Hidden Power		Special	1	100	15	The power varies with the Pokémon.
TM11	Sunny Day		Status	-	-	5	Boosts fire-type moves for 5 turns.
TM13	Snore		Special	40	100	15	An attack useable only while asleep.
TM17	Protect		Status	-	-	10	Foils attack that turn. It may fail.
TM20	Endure		Status	-	-	10	Always leaves at least 1HP.
TM21	Frustration		Physical	-	100	20	An attack based on lack of loyalty.
TM25	Thunder		Special	120	70	10	An attack that may cause paralysis.
TM27	Return		Physical	-	100	20	An attack that is based on loyalty.
TM32	Double Team		Status	-	-	15	Heightens evasive ness.
TM34	Swagger		Status	-	90	15	Causes confusion and raises ATTACK.
TM35	Sleep Talk		Status	-	-	10	Randomly attacks while asleep.
TM36	Sludge Bomb		Special	90	100	10	An attack that may poison the foe.
TM38	Fire Blast		Special	120	85	5	An attack that may cause a burn.
TM44	Rest		Status	-	-	5	Sleep for 2 turns to fully recover.
TM45	Attract		Status	-	100	15	Makes the opposite gender infatuated.
TM46	Thief		Physical	40	100	10	An attack that may steal a held item.

		Class				Description
Flamethrower		Special	95	100	15	An attack that may inflict a burn.
Thunderbolt		Special	95	100	15	An attack that may cause paralysis.

© 2026 dittobase.com. All rights reserved.

This website is an independent platform and is not associated with, validated, backed, or sponsored by Nintendo, Game Freak, Niantic, or The Pokémon Company.