Size Variation

Since Pokémon GO, Pokémon have been able to be different sizes, with Pokémon Let's Go, Pikachu & Eevee being the first main series titles to display this variation, and Pokémon Legends: Arceus the first to have Pokémon size variations be visible between the Pokémon.

Pokémon Scarlet & Violet continue with this by showing the size variations on the overworld and in battle once again, although it doesn't list the Pokémon's size in the Summary screen. A Pokémon's size cannot be changed and is determined when it is caught or hatched. It cannot be controlled in any way

Size Variance

Checking Size

There is a way to check a Pokémon's size, however. In Mesagoza, by a PokéBall flowerbed in the west, you will find a person who can check your Pokémon's size for you. If your Pokémon are the biggest they can be or smallest they can be, they will be given a special mark

GroupSize ValueSaying
XXXL255Now THIS is a BIG Pokémon! Wow, you almost never see one this huge!
XXL242-254This is a serious big'un! Feels comforting to have such a bulky, reliable buddy around, doesn't it?
XL196-241This one seems a good sight bigger than average! It's quite a specimen—take good care of it!
L161-195This one seems a little bit bigger than average!
M100-160Look at that: a perfectly average-sized specimen! It's the gold standard for normality. Amazing!
S61-99This one seems a little bit smaller than average!
XS31-60This one seems a good sight smaller than average! It's quite a specimen—take good care of it!
XXS1-30This is truly a little one! A pint-sized powerhouse of a ____. What a charmer!
XXXS0Now THIS is a tiny Pokémon! Wow, you almost never see one this little!
Size Variance