Gummis (Japanese: グミ Gummi) are consumable items found in the Pokémon Mystery Dungeon series. Gummis come in a variety of colors, and have varying effects based on where they are applied. Eating a Gummi can increase a Pokémon's stats, and in most instances, will also increase the Pokémon's IQ, allowing it to learn more IQ Skills, with better-tasting Gummis increasing the IQ gain by a greater amount.
In Pokémon Mystery Dungeon: Red Rescue Team and Blue Rescue Team, when a Gummi is eaten inside a Friend Area, one of the recipient's stats other than HP increases by 1. If the Gummi is a "big favorite" (that is, increases IQ by at least 9 points; which is possible only on dual-type Pokémon), it has a low chance to raise all four stats instead. Inside a dungeon, eating a Gummi will fill one's Belly: 60 Belly if it matches Pokémon's type, 30 if it weakens it, 25 if it's neutral, 20 if it is resisted by, and 5 if it's ineffective on it. In case of a Pokémon with two types, the numbers are added (e.g. A Grass Gummi would refill 80 of Hoppip's Belly, as it matches its Grass type and is resisted by its Flying type), and will not increase Belly size if at maximum. Gummis can be found in dungeons: the Stormy Sea and Kecleon Shops in Mt. Faraway, Western Cave and Wish Cave contain every type of Gummi. Additionally, lower rank missions have a chance to award a random Gummi.
In Pokémon Mystery Dungeon: Explorers of Time and Explorers of Darkness, stat gains occur randomly when they are eaten in dungeons and might rarely increase all stats. The Belly gain is now 30, 20, 15, 10 and 5 for the respective type matchups (dual-types taking the higher value). The player is able to buy Gummis for 800 Poké. Wonder Gummis are never available for purchase, and Gold Gummis are rarely seen in shops. Most Gummis will be found in dungeons that match the type that likes the certain Gummi the most.
There are many varieties of Gummi; each individual color is best received by a particular type. In Explorers of Time/Darkness, the Gummis are exclusive by game and the Gummis that cannot be found in the game are only found in certain dungeons, Zero Isle North and in Monster Houses or Treasure Boxes.
In Pokémon Mystery Dungeon: Rescue Team DX, Gummis are reduced to two different types due to IQ Skills being replaced by rare qualities. Both types of Gummis raise one of the Pokémon's stats (including HP and Speed, the latter of which did not appear in Gummis' prior appearances) at random; the stat is usually boosted by 1, but there is a small chance of the stat being increased by 3 instead. Rainbow Gummis sometimes yield a new rare quality, while DX Gummis always yield a new rare quality. A Pokémon can only have one rare quality at a time; if it gains another when it already has one, the Pokémon can choose to get the new rare quality, replacing their existing one, or keep the current one. Unlike in prior games, Gummis are automatically deposited into Kangaskhan Storage when obtained and cannot be withdrawn into the Toolbox, only being consumable at rescue team camps.
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