Muk
Muk 31/90 is a Uncommon Pokémon TCG card from Undaunted in the HeartGold & SoulSilver series. View its artwork, printed details and Normal and Reverse Holo finishes.

Card details
- Expansion
- Undaunted
- Series
- HeartGold & SoulSilver
- Collector number
- 31/90
- Rarity
- Uncommon
- Card release
- 18 August 2010
- Supported finishes
- Normal, Reverse Holo
Card prices
Ungraded market references; condition and edition affect actual sale prices. Estimates are labeled. TCGplayer data via TCGCSV · source updated Nov 5, 2026.
Printed card text
Stage 1 · 100 HP · Psychic · Evolves from Grimer
Sludge Drag
Energy cost: Psychic
Switch the Defending Pokémon with 1 of your opponent’s Benched Pokémon. The new Defending Pokémon is now Confused and Poisoned.
Pester — 50+ damage
Energy cost: Psychic, Colorless, Colorless
If the Defending Pokémon is affected by a Special Condition, this attack does 50 damage plus 30 more damage.
Weakness: Psychic ×2 · Retreat cost: 3 Colorless energy
Its body is made of a powerful poison. Touching it accidentally will cause a fever that requires bed rest.
Illustrated by Midori Harada
Where to pull this printing
Choose the finish you are missing, then open an eligible virtual pack in Poke Fun Play.
| Finish | Eligible virtual packs |
|---|---|
| Normal | Undaunted |
| Reverse Holo | Undaunted |
These routes come from this website’s configured pack models, including supplemental collection slots. They describe virtual pulls, not physical booster contents or official pull rates.
Other Muk printings
Collector numbers, rarity and card text can differ even when the name matches. Compare the artwork and details of these printings.
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