Experience/Core series/Relation to level/Fluctuating

The second experience group introduced in Generation III and a direct opposite to the Erratic group, the Fluctuating experience group contains the Pokémon which grow the slowest of all, reaching level 100 with a whopping 1,640,000 experience points. It is also, unsurprisingly, the smallest of the experience groups, containing only 14 species. Pokémon within this group require the least amount of experience to grow from level 1, needing only 540 points to reach level 10, as compared to 560 for Medium Slow, the next lowest requirement. They also require the most experience points to go from level 90 to 100—517,340 as compared to 338,750 for Slow, the next highest. Like the Erratic function, the Fluctuating group's level-up equation is calculated in a fashion.

Also like the Erratic experience group, the Fluctuating group gets its name from the wildly fluctuating requirement for each level to go to the next level, from Level 36 to Level 100.

For a list of all Pokémon in this group, see.