Bastiodon's Rock/Steel typing gives it an immunity to Poison. Only 3 weaknesses on top of that — it has plenty of safe switch-in opportunities. Been around since Gen 4. Works well under Trick Room.
Bastiodon's all-in on Defense at the expense of Speed. The mixed lean is obvious from the bars. Yields 2 Defense EVs and follows a standard growth curve.
Its face is sturdy—as strong as diamond—and this hardness offers a very stable defense. Much about this species is still unknown, such as its natural habitat.
Bastiodon Weakness
GoodBastiodon's Rock/Steel typing leaves it vulnerable to Fighting, Ground, and Water moves. Fighting and Ground hits land at 4x, so they're the biggest threat. It shrugs off Poison-type attacks completely. 8 resistances give it solid defensive coverage on top of that. Bastiodon's physical bulk (base 168 Def) helps cushion physical weakness hits, but special attackers are the bigger threat.
Bastiodon is the evolved form of Shieldon. Breeding produces Shieldon eggs, and they're slow to hatch. Evolving from Shieldon gave Bastiodon the biggest boost in Defense (+50), bringing the total to 495 stats.
How to Evolve
Breed with Bastiodon to get Shieldon eggs using 20 partners from the Monster egg group.
Stealth Rock is the priority every time Bastiodon comes in. Bold nature and max HP and Defense EVs keep it alive long enough to get layers down, while Rocky Helmet provides chip damage on every physical hit received. Sturdy rounds it out.
Best Build
Legends: Arceus uses different battle mechanics.
Competitive build content is not applicable for this game. Select a main series game for builds.
Bastiodon's movepool balances level-up moves with TM options. Consistent STAB comes from Steel Beam and Iron Tail, and coverage across 7 types keeps opponents from switching in for free. No major gaps here.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Finding Bastiodon at moderate rates takes patience. 1 spots are available in mid-game routes, but the rate difference between them matters. Lock in the top one from the sorted list below.
Where To Catch Bastiodon in Legends: Arceus
Step 1Catch ShieldonEASYSpace-Time Distortion - Mount CoronetGrassUncommonDistortion
Step 2Bastiodon ✓CHALLENGINGSpace-Time Distortion - Mount CoronetGrassRareDistortionor evolve from Shieldon (Step 1)
Bastiodon has a 495 base stat total and ranks as C-Tier — a situational pick that fills a niche. It works best as a support. Base 168 Defense is where it shines.
Watch for Lucario (Fighting), Garchomp (Ground), and Milotic (Water) when using Bastiodon. They all hit it super-effectively with STAB. Lucario is the most dangerous since Fighting moves deal 4x damage. At base 30 Speed, Bastiodon won't outrun any of these threats so switching to a resist is usually the safer play.
Shieldon evolves into Bastiodon at level 30. Bastiodon is the fully evolved form. At 495 BST, it's got solid stats to work with.
Sturdy prevents being KOed from full HP, leaving 1 HP instead — that's the one you want on Bastiodon. Soundproof is the hidden ability. Niche, but it has its uses.
Bastiodon fills the support role. It's leaning toward the physical side (base 52 Attack). Base 30 Speed is low. Priority moves or Trick Room are the way to go. And it's tanky enough to absorb a few hits.
Bastiodon appears in 12 games, including Platinum, HeartGold & SoulSilver, and Diamond & Pearl.
Bastiodon first appeared in Diamond & Pearl and has been available in 12 games across 6 generations. Obtainable through wild encounters in most titles where it appears.
- Gen IY
Yellow - Gen IRB
Red & Blue - Gen IIGS
Gold & Silver - Gen IIC
Crystal - Gen IIIRS
Ruby & Sapphire - Gen IIIFRLG
FireRed & LeafGreen - Gen IIIE
Emerald - Gen IVPt
Platinum - Gen IVHGSS
HeartGold & SoulSilver - Gen IVDPDebut
Diamond & Pearl - Gen VBW
Black & White - Gen VB2W2
Black 2 & White 2 - Gen VIXY
X & Y - Gen VIORAS
Omega Ruby & Alpha Sapphire - Gen VIIUSUM
Ultra Sun & Ultra Moon - Gen VIISM
Sun & Moon - Gen VIILGPE
Let's Go Pikachu & Eevee - Gen VIIISwSh
Sword & Shield - Gen VIIIPLA
Legends: Arceus - Gen VIIIBDSP
Brilliant Diamond & Shining Pearl - Gen IXSV
Scarlet & Violet - Gen IXLZA
Legends: Z-A