Fire Red Pokedex entry.
"It carries a pendulum-like device. There once was an incident in which it took away a child it hypnotized."
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You'll need to evolve Drowzee to get Hypno.
Drowzee evolves into Hypno at level 26.
Drowzee and Hypno are top choices. but most psychic Pokemon know/can learn Hypnosis.
Pokemon isn't evil!!!! D:
you cant you have to find a Pokemon like hypno ,or a butterfree has sleep powder