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Grumpig is a Psychic Pokémon which evolves from Spoink. It is vulnerable to Bug, Ghost and Dark moves. Grumpig's strongest moveset is Extrasensory & Psychic and it has a Max CP of 2,369.
"Grumpig uses the black pearls on its body to amplify its psychic power waves for gaining total control over its foe. When this Pokémon uses its special power, its snorting breath grows labored."
Extrasensory is generally favored for its superior STAB damage output, though Charge Beam has a slight edge in energy generation.
All of Grumpig's charge moves cost the same amount of energy, which means Grumpig doesn't have to bait shields, however they are all moderately expensive. Shadow Ball is quite powerful and provides relatively neutral Ghost-type coverage (including against Grumpig's weakness to Ghost-types). Psychic outperforms Mirror Shot and makes the latter irrelevant.
Grumpig is a mono-Psychic type with moderate bulk, and a strong but slow moveset. With the cheapest charge move energy-wise demanding 55 energy, Grumpig is way too slow to compete against various other meta Pokemon. Grumpig also competes against other Psychic-types in this league for their role, and without anything special in terms of stats or coverage, Grumpig unfortunately has to take the back seat.
Grumpig has a niche in Ultra League with advantages against primarily Fighting-types. Its moveset is still way too slow to challenge the rest of the meta, but its bulk is respectable in this league, especially if legendary Pokemon are excluded.
Grumpig would look like ham or bacon to the Pokemon that compete in this league.
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