Lahmus

Red / Blue: The SHELLDER that is latched onto SLOWPOKE's tail is said to feed on the host's left over scraps.

Yellow: Lives lazily by the sea. If the SHELLDER on its tail comes off, it becomes a SLOWPOKE again.

Gold: If the tail-biting SHELLDER is thrown off in a harsh battle, it reverts to being an ordi­ nary SLOWPOKE.

Silver: Naturally dull to begin with, it lost its ability to feel pain due to SHELLDER's seeping poison.

Crystal: An attached SHELLDER won't let go because of the tasty flavor that oozes out of its tail.

Ruby / Sapphire: SLOWBRO’s tail has a SHELLDER firmly attached with a bite. As a result, the tail can’t be used for fishing anymore. This causes SLOWBRO to grudgingly swim and catch prey instead.

Emerald: Its tail has a SHELLDER firmly attached with a bite. As a result, the tail can’t be used for fishing anymore. This forces it to reluctantly swim and catch prey.

FireRed: When a SLOWPOKE went hunting in the sea, its tail was bitten by a SHELLDER. That made it evolve into SLOWBRO.

LeafGreen: The SHELLDER that latches onto SLOWPOKE’s tail is said to feed on the host’s leftover scraps.

Diamond +2: Though usually dim witted, it seems to become inspired if the SHELLDER on its tail bites down.

HeartGold: If the tail-biting SHELLDER is thrown off in a harsh battle, it reverts to being an ordinary SLOWPOKE.

SoulSilver: Naturally dull to begin with, it lost its ability to feel pain due to SHELLDER’s seeping poison.

Black +3: Though usually dim witted, it seems to become inspired if the Shellder on its tail bites down.

X: An attached Shellder won’t let go because of the tasty flavor that oozes out of its tail.

Y: When a Slowpoke went hunting in the sea, its tail was bitten by a Shellder. That made it evolve into Slowbro.

Omega Ruby / Alpha Sapphire: Slowbro’s tail has a Shellder firmly attached with a bite. As a result, the tail can’t be used for fishing anymore. This causes Slowbro to grudgingly swim and catch prey instead.

Sun: It spaces out while gazing at the sea. With Shellder’s poison flowing through its body, it becomes even spacier.

Moon: Whenever Shellder bites down hard on its tail, it gives Slowbro a flash of inspiration...which it forgets a moment later.

Ultra Sun: Spacing out is basically all it does. It turns back into Slowpoke if its tail, along with Shellder, breaks off.

Ultra Moon: Shellder, in its greed to suck out more and more sweetness from Slowbro’s tail, has metamorphosed into a spiral-shaped shell.

Let's Go Pikachu / Let's Go Eevee: Lives lazily by the sea. If the Shellder on its tail comes off, it becomes a Slowpoke again.

Sword: Slowpoke became Slowbro when a Shellder bit on to its tail. Sweet flavors seeping from the tail make the Shellder feel as if its life is a dream.

Shield: Being bitten by a Shellder shocked this Pokémon into standing on two legs. If the Shellder lets go, it seems Slowbro will turn back into a Slowpoke.