Weepinbell has a yellow, bell-shaped body with a single green leaf on either side. It uses these razor sharp leaves to slice up prey. It has a wide, gaping mouth with pink lips. Above Weepinbell's circular eyes is a pattern of three small green spots and small hook-shaped stem.
Weepinbell camouflages itself as a plant in the forest whilst awaiting an unwary victim. When its prey draws near it sprays toxic pollen to immobilize the target before melting it with its internal acids. It oozes a neutralizing fluid that prevents these internal acids from melting its own body. Weepinbell live in forests and tropical jungles where it hangs from tree branches by its stem to sleep. If it moves around during sleep, Weepinbell may slip and awaken to find itself on the ground.
In Pokémon Adventures, Red gets dragged into an evolutionary ceremony by a wild Victreebel to serve as food in the Kanto Safari Zone. With the help of the Pidgey-shaped robot that was assigned to him, and a few good items he carried around, the Weepinbell that were about to eat him for their evolution were distracted, and he was able to flee. Red seemed safe, but the wild Nidoking he'd injured earlier came rampaging in, though he was able to capture them all in the end.
Sebastian, Platinum's resident butler, has a Weepinbell that he uses to drive burglars out of the Berlitz mansion. However, when Diamond accidentally sneaked in thinking that he walked into a large park, all the Pokémon accomplished was getting his clothes wet, though it proved to be an adept battler.
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.
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.