Gloom (Japanese: クサイハナ Kusaihana) is a dual-type Grass/Poison Pokémon introduced in Generation I.
It evolves from Oddish at level 21 and evolves into either Vileplume when exposed to a Leaf Stone or Bellossom when exposed to a Sun Stone.
(Specifics may differ in past games. Refer to Game data→Evolution data for these details.)
Biology

Gloom is a blue, bipedal Rafflesia-like Pokémon with rudimentary hands and feet. On its head is a flower with spherical petals surrounded by four reddish-brown leaves. The petals are a dark reddish-brown and have white spots. A female displays a single large spot on each petal, while a male will have many smaller spots. Gloom's eyes are wide and often appear closed and its lips are thin and purple.
Gloom trickles sticky nectar from its mouth with the appearance and consistency of drool. This can be used as a fertilizer for plants. Both this nectar and the flower on Gloom's head release a foul odor strong enough to induce fainting in humans over a mile (1.6 kilometers) away. However, it can also attract prey, and even a very small number of humans find it pleasing. This odor is a key ingredient for some perfume production. When it is in danger, the odor worsens, but it will not emit its odor if it feels safe. Gloom lives in grassy plains. In Generation I, Petal Dance was its signature move.
Evolution
Gloom evolves from Oddish and evolves into either Vileplume or Bellossom.
(For specifics on this Pokémon's evolution in the games, refer to Game data→Evolution data.)
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Game data
Pokédex entries
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Game locations
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In side games
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In events
Wild Area News
Held items
Pokémon caught in Generation I must be traded to a Generation II game in order for a held item to appear.
Stats
Base stats
Pokéathlon stats
Type effectiveness
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Learnset
Gloom is available in Scarlet and Violet Version 3.0.0+.
By leveling up
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By TM
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By breeding
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By a prior evolution
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Side game data
In Pokémon GO, Gloom can be obtained by completing 1/6 of the Special Research, A Seven-Colored Shadow.
Evolution data
Gloom evolves from Oddish at level 21 and evolves into either Vileplume when exposed to a Leaf Stone or Bellossom when exposed to a Sun Stone. Gloom cannot evolve into Bellossom in Pokémon FireRed and LeafGreen before the player obtains the National Pokédex, as its evolution will be interrupted. Gloom also cannot evolve into Bellossom in Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!, as Bellossom is not present in those games.
Sprites
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In the anime

Major appearances
Gloom debuted in Pokémon Scent-sation!, under the ownership of Erika. Ash first rescued it from the Celadon Gym when it was set on fire due to Team Rocket's actions. Erika first met Gloom when it saved her from a Grimer when she was a girl. According to this episode, Gloom is a very useful Pokémon, as Erika uses Gloom's stench as a recipe for creating perfume. It reappeared in flashbacks in Pikachu's Goodbye, the Japanese version of Gotta Catch Ya Later!, and Suffering the Flings and Arrows!.
In Make Room for Gloom, Florinda initially wanted to evolve her Gloom into a Vileplume. However, Florinda eventually decided it didn't need to evolve after it beat Team Rocket with its powerful Solar Beam attack. It reappeared in a flashback in Bulbasaur... the Ambassador!.
In Pokémon Food Fight!, Gulzar owns a Gloom. Ash tried to battle it with Charizard, but he sent Squirtle and then Snorlax out by mistake, which resulted in Snorlax trying to eat Gloom's leaves.
In Whichever Way the Wind Blows, multiple Gloom either evolved into Bellossom or Vileplume depending on the direction of the wind which contained fragments of Sun Stones and Leaf Stones.
In Bucking the Treasure Trend!, multiple Gloom attacked Ash, his friends, and Buck as they searched for Dandelion Island's treasure.
In A Fork in the Road! A Parting of the Ways!, a Gloom caused Jessie and Wobbuffet to fall off a cliff.
Minor appearances
In Pokémon Scent-sation!, a Gloom was in the Celadon Gym, separate from the one Erika bonded with as a child and then kept as one of her battling Pokémon.
In Showdown at the Po-ké Corral, multiple Gloom were living at Professor Oak's Laboratory.
In Pikachu's Vacation, a Gloom was at the Pokémon Theme Park.
In Round One - Begin!, a Trainer's Gloom competed in the Indigo Plateau Conference.
In Friends to the End, a Trainer's Gloom was at the closing ceremonies of the Indigo Plateau Conference.
In The Power of One, a Gloom sensed the disturbance caused by Lawrence III.
A wild Gloom appeared in Pikachu's Rescue Adventure.
Multiple Gloom appeared in Foul Weather Friends.
In The Fortune Hunters, a Gloom was stolen by Butch and Cassidy.
In Ariados, Amigos, a Trainer's Gloom was at the Pokémon Jujitsu Academy.
Two Gloom appeared in The Grass Route, with one being wild and the other under the ownership of a Trainer competing in the Grass Tournament.
In Delibird's Dilemma, multiple Gloom helped Bulbasaur find some Christmas presents dropped by a Delibird.
In Bulbasaur... the Ambassador!, multiple Gloom were among the feuding Pokémon at Professor Oak's Laboratory.
In Johto Photo Finish, a Gloom was fed by Tracey at Professor Oak's Laboratory.
In Grass Hysteria!, multiple Gloom were residents of the Forbidden Forest.
In Hokey Poké Balls!, a Gloom was at Professor Oak's Laboratory.
A Gloom appeared in Destiny Deoxys.
A Coordinator's Gloom appeared in Harley Rides Again.
In Pinch Healing!, a Gloom was a resident of Fennel Valley.
In Once More With Reeling!, a Coordinator's Gloom participated in the Terracotta Contest.
In The Grass-Type Is Always Greener!, a Gloom was found by Cheryl's Mothim while searching for the Enchanted Honey. Gardenia tried to catch it, but it managed to run away.
A wild Gloom appeared in Pokémon Ranger and the Kidnapped Riolu! Part 1 and Part 2.
In the opening sequence of Arceus and the Jewel of Life, a Gloom was in an Aroma Lady's field of flowers.
A Gloom appeared in League Unleashed!, under the ownership of a girl.
In Under the Pledging Tree!, a Trainer's Gloom was present during the Coumarine City Festival.
A Gloom appeared as an image in A Performance Pop Quiz!.
A Gloom appeared in I Choose You!.
In Alola, Kanto!, three Gloom and a Vileplume got into a fight with a Weepinbell and Victreebel, which Bulbasaur had to break up.
Three Gloom appeared in a flashback in Enter Pikachu!.
A Gloom appeared in Legend? Go! Friends? Go!.
A Trainer's Gloom appeared in Trade, Borrow, and Steal!.
A Trainer's Gloom appeared in To Train, or Not to Train!. It reappeared in Breaking the Ice!.
A Trainer's Gloom appeared in Memories of a Warming Kindness!.
In The Mew from Here!, a Gloom was seen on Faraway Island.
A Gloom appeared in This Could be the Start of Something Big!.
Pokédex entries
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In the manga

Ash & Pikachu
A Gloom appeared in Do Your Best Bulbasaur!!, where it was seen at Professor Oak's Laboratory.
The Electric Tale of Pikachu
In Days of Gloom and Glory, Florinda Showers was shown to have multiple Gloom, unlike her anime counterpart. They were used to make herbal medicines.
Pocket Monsters HGSS
A Gloom appeared in PMHGSS14.
Pocket Monsters HGSS Jō's Big Adventure
A Gloom appeared in JBA4, under the ownership of Ariana.
Pokémon Adventures
Gloom first appeared in Paras Sight, under the ownership of Erika. It was part of her Gym team, but it wasn't shown battling.
A Gloom appeared in The Last Battle XIII as one of the Pokémon sent to participate in the fight in Ilex Forest.
In Softening Up Kakuna, a Gloom was used by a Trainer that was challenging the Battle Factory.
A Gloom appeared in Out-Odding Oddish, under the ownership of a Pokéathlon participant.
Team Rocket Executive Ariana's Gloom appeared in Pleased as Punch With Parasect.
Pokémon Battle Frontier
A Gloom appeared in Final Battle: Versus The Salon Maiden.
Pokémon Gotta Catch 'Em All
A Gloom appeared in The Raining Crystal Ball.
A Gloom appeared in GDZ23.
Shu caught a Gloom, as seen in GDZ64.
A Gloom appeared in GDZ67, under the ownership of a monk.
Pokémon Pocket Monsters
A Gloom appeared in Big Struggle with the Powerful Opponent Venusaur!!.
A Gloom appeared in Aim to be the No. 1 Pokémon!, under the ownership of Erika. It evolved from an Oddish and then into a Vileplume as part of an act.
A Gloom appeared in Demanding Tests at the Pokémon School!.
Pokémon Zensho
A Gloom appeared in PZ05, under the ownership of a Gym Trainer at Celadon Gym.
In the TCG
Main article: Gloom (TCG)Trivia
Origin

Gloom seems to be based on a mandrake, plants from the Mandragora genus whose roots sometimes resemble human figures, and the budding stage of Rafflesia, a genus of parasitic plants known for their large, foul smelling flowers. Its brown leaves may also allude to its parasitic origins, as if the flower is drawing nutrients away from Oddish's formerly green leaves and causing them to wilt. Female Gloom resemble Rafflesia hasseltii due to the larger spots on their petals.
Its tendency to emit a foul odor when it feels threatened is similar to a skunk and comes from Rafflesia's rotting flesh smell. The fact that its pungent pollen can be made into a fragrant perfume may be a reference to musk, an aromatic substance secreted from the glands of various animals that is a common perfume ingredient but smells unpleasant in high concentrations.
Name origin
Gloom may be derived from gloom (a state of depression), glue (due to the sticky substance), and bloom. It may also involve glume (a leaf-like structure).
Kusaihana may be derived from 臭い花 kusai hana (stinking flower).
In other languages
External links
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