Flat stats across the board. Bashful sounds balanced, but in practice every Pokemon benefits from boosting at least one stat. Use a Mint to change to Adamant, Jolly, Modest, or Timid. Legends: Arceus assigns natures at random. There's no way to target or change Bashful, but you wouldn't want to anyway.
Bashful is a neutral nature with no stat change. For special attackers, use Modest or Timid instead.
Modest
+Sp. Attack/-Attack
Maximizes special damage output
Timid
+Speed/-Attack
Outspeed threats while hitting specially
| # | Pokemon | Nature | Tier | Role | Ability | Spe |
|---|---|---|---|---|---|---|
| 1 |  Landorus GROUND | Timid | S | Utility | Sheerforce | 101 |
| 2 | Timid | S | Special Attacker | Prankster | 111 | |
| 3 |  Gengar GHOSTPOISON | Timid | A | Special Attacker | Levitate | 110 |
| 4 |  Heatran FIRESTEEL | Timid | A | Special Attacker | Flashfire | 77 |
| 5 |  Elekid ELECTRIC | Timid | A | Special Attacker | Vitalspirit | 95 |
| 6 |  Jolteon ELECTRIC | Timid | A | Special Attacker | Voltabsorb | 130 |
| 7 |  Espeon PSYCHIC | Timid | A | Special Attacker | Magic Bounce | 110 |
| 8 |  Goodra DRAGON | Timid | A | Special Attacker | Sapsipper | 80 |
| 9 |  Blissey NORMAL | Modest | B | Special Tank | Natural Cure | 55 |
| 10 |  Ninetales FIRE | Timid | B | Special Attacker | Flashfire | 100 |
| 11 |  Magneton ELECTRICSTEEL | Modest | B | Special Attacker | Magnetpull | 70 |
| 12 |  Infernape FIREFIGHTING | Timid | B | Special Attacker | Blaze | 108 |
| 13 |  Alakazam PSYCHIC | Timid | B | Special Attacker | Magic Guard | 120 |
| 14 |  Togekiss FAIRY | Timid | B | Special Attacker | Serenegrace | 80 |
| 15 |  Froslass ICEGHOST | Timid | B | Bulky Support | Cursedbody | 110 |
| 16 |  Sylveon FAIRY | Modest | B | Special Wallbreaker | Pixilate | 60 |
| 17 |  Tentacruel WATERPOISON | Timid | B | Bulky Support | Clearbody | 100 |
| 18 |  Empoleon WATERSTEEL | Modest | B | Special Attacker | Torrent | 60 |
| 19 |  Magnezone ELECTRICSTEEL | Modest | B | Special Attacker | Analytic | 60 |
| 20 |  Porygon2 NORMAL | Modest | B | Special Tank | Download | 60 |
Tentacruel
WATER POISON
Bashful is a neutral nature — no stat is increased or decreased.
Competitive Role
No competitive advantage. A stat-boosting nature is almost always preferred.
How to Get
SynchronizeLead with a Bashful Pokemon that has the Synchronize ability. Wild Pokemon will match its nature. (Gen 3+)
BreedingGive the parent with Bashful nature an Everstone. The offspring will inherit it. (100% since Gen 5)
Nature MintUse a Bashful Mint to change stat effects to Bashful. The original nature name stays but stats change. (Gen 8+)
Recommended Alternatives
What does the Bashful nature do in Pokemon?
Bashful leaves all stats untouched. No 10% boost, no 10% cut. It's one of five natures that have zero competitive impact.
Is Bashful nature good?
Honestly? Never, for competitive play. Some people argue a neutral nature works when a Pokemon uses all stats equally, but that scenario basically doesn't exist. Pick a stat to boost.
How do I get a Bashful nature Pokemon?
Wild Pokemon have a random nature, so you might get Bashful naturally. Synchronize and Everstone breeding also work. But the real question is why you'd want to keep it.
When should you use a neutral nature?
Almost never. The only edge case is a Pokemon that uses physical moves, special moves, and needs every defensive stat and Speed. That Pokemon doesn't really exist in competitive. Even mixed attackers prefer Naive, Hasty, or another nature that at least boosts Speed.