Gloom has a very wide mouth that is nearly always agape, with some drool leaking. The flower on its head is large with four petals. Gloom also has some leaves sticking out of its sides.
All Gloom have the ability Chlorophyll. Chlorophyll allows Gloom's Speed to rise when the sun is strong. The drool of Gloom is very powerful; it can be smelt from miles away.
In the anime
- Main article: Erika's Gloom
Erika has a Gloom appearing in Pokémon Scent-sation! on whom Ash rescued from Team Rocket who set it in flames. Florinda has a Gloom appearing in Make Room for Gloom. In Pokémon Food Fight!, Gulzar had a Gloom. A Gloom appeared in [[AG188: AG188: Pinch Healing!]|AG188: Pinch Healing!], Pokémon Ranger and the Kidnapped Riolu! Part 1 , League Unleashed! respectively. Several appeared in Whichever Way the Wind Blows.
|Red/Blue||Route 12-15 (Red only)||Rare|
|Yellow||Route 12-15, and Cerulean Cave||Uncommon|
|Ruby/Sapphire||Route 121, 123, Safari Zone||Uncommon|
|Emerald||Route 121, 123, Safari Zone||Uncommon|
|FireRed/LeafGreen||Route 12-15, Berry Forest, Bond Bridge, Cape Brink, and Water Path||Uncommon|
|Diamond/Pearl||Route 224, 229, 230||Common|
|Platinum||Route 224, 230||Uncommon|
|HeartGold/SoulSilver||Route 5, 47, 48||Uncommon|
|Black/White||Evolve Oddish (White only)||None|
Side game locations
|Pokémon Channel||Viridian Forest|
|Pokémon Pinball Ruby & Sapphire||Evolve Oddish|
|Pokémon Trozei!||Endless Level 2, 15, Forever Level 51, Mr. Who's Den|
|Red Rescue Team & Blue Rescue Team||Silent Chasm (1-9F)|
|Explorers of Time & Explorers of Darkness||Apple Woods (7-12F)|
|Pokémon Ranger||Olive Jungle|
|Pokémon Ranger: Shadows of Almia||Chroma Highlands|
|Pokémon Rumble||Silent Forest|
|Pokémon Ranger: Guardian Signs||Old Mansion, Forest Temple|
Gloom appears to be based on a type of flower.
- Gloom is the only dual-typed that can evolve into a single-type being Bellossom.
- A threatened Gloom or a normal Gloom will give out a horrifying smell, while if a Gloom is not threatened it's scent will smell just fine.
- Pokémon.com Pokédex
- Serebii.net Pokédex data
- Legendary Pokémon data
- The Pokémon Database
- Pokémon Dream Pokédex data
- Psypokes Psydex data