Gloom

Gloom is the Weed Pokémon, a dual Grass and Poison type introduced in Generation One. It stands at roughly waist height on a human child, with a squat, rounded blue body and short stubby arms hanging at its sides. Its most defining feature is the large flower growing from the crown of its head, a wide-petaled bloom whose interior shades from deep red to reddish purple. Gloom's face wears a perpetually drowsy expression, with half-closed eyes and a mouth that drips a thick, sticky nectar almost without pause. Despite its sluggish appearance, that flower is biologically complex and central to nearly everything this species does.

Gloom is found in grasslands and open meadows across several regions, particularly in areas where Oddish populations are already established. It favors warm, temperate climates with moderate rainfall, gravitating toward spots where sunlight reaches the ground unobstructed. Gloom tends to be more solitary than its pre-evolution, ranging somewhat farther from dense undergrowth. It is most commonly encountered during daylight hours, though it does not sleep in any conventional sense — it often stands motionless in a single location for extended stretches, appearing dormant while remaining alert to nearby movement. Population density is moderate overall, and trainers working through tall grass report finding Gloom most reliably in the late morning and early afternoon.

The fluid dripping from Gloom's mouth is not saliva. It is a potent attractant secreted by the flower, and the scent it produces is notoriously foul to humans and most Pokémon — researchers describe it as a combination of rotting organic matter and sharp chemical undertones. Certain insects and Pokémon find it irresistible, however, and approach close enough for Gloom to feed. Gloom is not an aggressive hunter in any active sense; it simply waits, relying entirely on passive attraction to bring prey within reach. The fluid also provides mild defensive cover, as the overwhelming odor discourages many predators from investigating further. Trainers who handle Gloom regularly report that the smell clings to clothing for days. Despite all of this, Gloom is docile and uninterested in confrontation unless provoked, and it bonds readily with patient trainers who are willing to tolerate its aroma.

Gloom's primary ability is Chlorophyll, which dramatically accelerates its movement during periods of strong sunlight — a considerable advantage given how naturally slow this species is. Under bright enough conditions it can outpace opponents that would otherwise overtake it with ease. Its hidden ability, Stench, is an extension of the same signature nectar: each strike it lands carries a small chance of startling the target badly enough to disrupt their next action. In terms of typing, the dual Grass and Poison combination serves Gloom offensively by letting Poison-type moves reach Fairy types that would otherwise shrug off Grass attacks. Defensively, however, the same combination accumulates meaningful weaknesses, including Flying, Bug, Fire, Ice, Ground, and Psychic. Gloom leans toward special offense rather than physical, making it most effective at range. In battle it performs best when sunlight is available to compensate for its low natural speed, or in drawn-out engagements where its reliable special attack can whittle opponents down steadily over time.

Gloom occupies the middle stage of a three-part evolutionary line. It evolves from Oddish through leveling, and from Gloom two distinct evolutionary paths become available — both requiring a stone rather than continued leveling. Exposure to a Leaf Stone causes Gloom to evolve into Vileplume, a fully flowering Grass and Poison type whose bloom enlarges dramatically and whose special attack rises to formidable levels. Exposure to a Sun Stone instead produces Bellossom, a pure Grass type that sheds its Poison typing entirely and takes on a graceful, dancing form. This branching evolution places Gloom among a small group of Pokémon whose final form depends entirely on which stone the trainer chooses to apply. Researchers study Gloom with particular interest for the biochemistry of its nectar, which has shown potential in botanical research and aromatic studies. For trainers, Gloom is a genuinely useful transitional Pokémon — capable in its own right, and a doorway to two powerful and stylistically distinct final evolutions.