Red +2: It spits out POISONPOWDER to immobilize the enemy and then finishes it with a spray of ACID.
Yellow: When hungry, it swallows anything that moves. Its hapless prey is melted inside by strong acids.
Gold: Even though it is filled with ACID, it does not melt because it also oozes a neutral izing fluid.
Silver / SoulSilver: If its prey is bigger than its mouth, it slices up the victim with sharp leaves, then eats every morsel.
Crystal: When it's hungry, it swings its razor-sharp leaves, slicing up any unlucky object nearby for food.
Ruby / Sapphire: WEEPINBELL has a large hook on its rear end. At night, the POKéMON hooks on to a tree branch and goes to sleep. If it moves around in its sleep, it may wake up to find itself on the ground.
Emerald: At night, a WEEPINBELL hangs on to a tree branch with its hooked rear and sleeps. If it moves around in its sleep, it may wake up to find itself on the ground.
FireRed / X: The leafy parts act as cutters for slashing foes. It spits a fluid that dissolves everything.
Diamond +6: A Pokémon that appears to be a plant. It captures unwary prey by dousing them with a toxic powder.
HeartGold: Even though it is filled with acid, it does not melt because it also oozes a protective fluid.
Y: It spits out Poison Powder to immobilize the enemy and then finishes it with a spray of Acid.
Omega Ruby / Alpha Sapphire: Weepinbell has a large hook on its rear end. At night, the Pokémon hooks on to a tree branch and goes to sleep. If it moves around in its sleep, it may wake up to find itself on the ground.
Let's Go Pikachu / Let's Go Eevee: When hungry, it swallows anything that moves. Its hapless prey is dissolved by strong acids.