Parasect

Parasect is a host-parasite pair in which the parasite mushroom has taken over the bug host. This Pokemon prefers damp places, and is the evolved form of Paras. In "The Problem with Paras," Team Rocket instills Paras with self-respect and it evolves into Parasect. Meowth, Jesse and James all take credit for this feat but they also have other plans for this bug Pokemon...

First appearance: Episode 44—"The Problem with Paras"