It resembles a mysterious Pokémon described in a paranormal magazine as a Jigglypuff from one billion years ago.
Scream Tail is a Fairy/Psychic-type Pokémon. It takes double damage from Poison, Ghost and Steel, resists Fighting and Psychic, and is immune to Dragon. Its base stats add up to 570: the highest are HP and Special Defense (115) and the lowest are Attack and Special Attack (65).
It does not evolve, and no other Pokémon evolves into it. Its ability is Protosynthesis. It cannot breed: it is in the Undiscovered egg group. In Scarlet and Violet it learns 16 moves by level-up and 71 by TM.
BASE STATS
EVs on defeat:
HP +3
ABILITIES
Boosts the Pokémon's most proficient stat in harsh sunlight or if the Pokémon is holding Booster Energy.
BREEDING
MOVES
WEAKNESSES & RESISTANCES
EVOLUTION LINE
This Pokemon does not evolve