Drowzee is a bipedal Pokémon that resembles a tapir. It has tired-looking eyes, a short trunk above its mouth, and triangular ears with brown interiors. The upper half of Drowzee's body is yellow and the lower half is brown. A wavy line separates the two halves. It has a round belly and short legs. Its feet are brown, except for its two toes, which are yellow. The bottom of each foot has a small, round, pink pad in the middle of it. There are three fingers on each of its hands. Drowzee is believed to have a common ancestor with Munna and Musharna.
Drowzee is able to put people to sleep and can then sense the person's dreams. This is so it knows what kind of dream it would be eating. It has certain preferences for the dreams it eats, and it is known to love fun dreams and become ill from bad dreams. It will rarely eat the dreams of adults, as the dreams of children are seemingly tastier. Drowzee remembers every dream it has eaten and may show past meals to a person it trusts. It eats dreams through the victim's nose, so it is said that Drowzee is standing over a person's pillow if their nose itches while they are asleep. Drowzee lives in grasslands and savannas.
In Hypno's Naptime, a Drowzee and its evolved form were used to help the members of the Pokémon Lover's Club get some sleep. However, after Hypno caused children to act like Pokémon and drained the energy of Pokémon resting in the local Pokémon Center, Drowzee was used to fix the problem Hypno created.
In Pikachu Re-Volts, Butch and Cassidy used a Drowzee stolen from their fake Pokémon Breeding Center while stationed at Mandarin Island North. Its Psychic powers brainwashed Pokémon into turning against their Trainers and obeying Butch and Cassidy instead.
In Fear Factor Phony, a Drowzee lived in an abandoned mining colony. The other Psychic Pokémon it lived with had parties in order to help them forget their sadness due to the fact that the miners had left the town long ago. However, the constant partying was disturbing the Ghost Pokémon that lived in the abandoned mine.
In Beating the Bustle and Hustle!, Azure owns a Drowzee, which participated with him in the fake Sinnoh Pokémon Hustle that Team Rocket had set up. It was particularly powerful, being able to send Team Rocket blasting off and hold its own against Officer Jenny's Growlithe for a while.
In Turning Heads and Training Hard!, a Team Skull Grunt's Drowzee was quickly defeated by Ilima and his Eevee. In League Offenders and Defenders!, Drowzee was defeated by Team Rocket; and in Battle Royal 151!, it competed in the Manalo Conference, only to be defeated by Ilima's Eevee again. It reappeared once more in Thank You, Alola! The Journey Continues!.
In Healing the Healer!, Goh caught a Drowzee, which he used to help defend Suicune from a group of Pokémon hunters.
In Mewtwo Strikes Back, a Trainer's Drowzee was defeated by Mewtwo while it was serving Giovanni.
In Pikachu's Vacation, a Drowzee was at the Pokémon Theme Park.
A Drowzee briefly appeared in A Friend In Deed.
In The Power of One, a Drowzee sensed the disturbance caused by Lawrence III.
In Tricks of the Trade, a Drowzee wa at the Pokémon Swap Meet in Palmpona.
In The Psychic Sidekicks!, a Drowzee lived in Len Town.
In Beauty and the Breeder, a Pokémon Breeder's Drowzee participated in a Pokémon breeding competition.
A thief Drowzee appeared in Pokémon Mystery Dungeon: Explorers of Time & Darkness and Pokémon Mystery Dungeon: Explorers of Sky - Beyond Time & Darkness.
In a flashback in Pokémon Ranger and the Kidnapped Riolu! (Part 1), a Scientist's Drowzee unsuccessfully subdued the Aura Sphere Riolu in an attempt to capture it.
A Drowzee appeared in Camping It Up!.
A Drowzee appeared in Old Rivals, New Tricks.
In A Marathon Rivalry!, a Trainer's Drowzee competed in the Camellia Town Pokéathlon.
In the beginning of Mewtwo Strikes Back—Evolution, a Drowzee replaced Raymond's Golem from Mewtwo Strikes Back. Alongside his Venomoth and Pinsir, it fought Ash's Pikachu, only for all of them to be defeated with Thunderbolt.
In From Z to Shining Z!, a Trainer's Drowzee watched the battle between Ash's Pikachu and Tapu Koko.
||Drowzee, the Hypnotic Pokémon. It is said to feed on the dreams of its opponents. It is also known for its powerful Psychic attack.