Shieldon is a small, ceratopsian-like Pokémon with an extremely hard facial hide that leaves it vulnerable only from behind. Revived from an Armor Fossil, it evolves into Bastiodon at level 30, tied with Cranidos for the earliest evolution level of any Fossil Pokémon.
It lived in dense forests and primeval jungles millions of years ago, eating grass, tree roots and berries, and is described as mild-mannered and averse to conflict.
Multiple Shieldon debuted in Ill-Will Hunting!, where J tried to capture all of them while Gary was tasked with protecting them; she caught one, and Ash freed it. Newton Graceland was later shown owning a Shieldon in Giratina and the Sky Warrior.
Kouki Saitou illustrated both its Mysterious Treasures Uncommon and its DP Black Star promo. Platinum used a Mitsuhiro Arita illustration, and the XY era's Steam Siege brought art by Mizue. Ultra Prism and Astral Radiance followed with Uncommons by so-taro and Yuka Morii, and Pitch Black gave Shieldon a Common in the Mega Evolution era illustrated by Kurata So.
Mysterious Treasures' Uncommon, illustrated by Kouki Saitou.
Platinum's Uncommon, illustrated by Mitsuhiro Arita.
Steam Siege's Uncommon, illustrated by Mizue.
Pitch Black's Common, illustrated by Kurata So, in the Mega Evolution era.
Shieldon evolves into Bastiodon starting at level 30.
Shieldon is based on a ceratopsian dinosaur, particularly resembling Protoceratops, combined with the idea of a shield.
Our catalog lists 7 Shieldon cards across 7 sets.
| # | Card | Set | Year | Rarity | Price | 30D | |
|---|---|---|---|---|---|---|---|
| 1 | Shieldon | DP Black Star Promos | 2007 | Common | Holo | $35.35guide | +47.5% |
| 2 | Shieldon | Platinum | 2009 | Uncommon | — | $1.13guide | +5.6% |
| 3 | Shieldon | Mysterious Treasures | 2007 | Uncommon | — | $0.42guide | 0.0% |
| 4 | Shieldon | Ultra Prism | 2018 | Uncommon | — | $0.27guide | +8.0% |
| 5 | Shieldon | Steam Siege | 2016 | Uncommon | — | $0.27guide | +12.5% |
| 6 | Shieldon | Astral Radiance | 2022 | Uncommon | — | $0.26guide | 0.0% |
| 7 | Shieldon | Pitch Black | 2026 | Common | — | $0.25guide | +92.3% |
Ranked by each card’s main print in near-mint raw condition. 1st Edition, Shadowless and other versions are priced on each card’s page. The table updates live.
The most valuable Shieldon card is the Common from the DP Black Star Promos set, released in 2007, which leads the ranking by a wide margin. All 7 of the Shieldon cards carry a market value, and they span the years 2007 to 2026. Shieldon card value is led by Diamond & Pearl era prints, with the Platinum and Mysterious Treasures Uncommons following the promo.
The DP Black Star Promos Common from 2007 sits 24.3 times ahead of the next card, the Platinum Uncommon from 2009. Mysterious Treasures from 2007 holds third with another Uncommon. Fourth and fifth are the Astral Radiance Uncommon from 2022 and the Ultra Prism Uncommon from 2018. Every one of these leading Shieldon cards is a Common or an Uncommon, so the ranking is built from plain printed rarities.
Diamond & Pearl supplies 3 of the 7 Shieldon cards in the ranking, including the top three places. XY, Sun & Moon, Sword & Shield and Mega Evolution each place 1 card. The newest era's leader is the Pitch Black Common from 2026, 7th overall. Vintage here means the WOTC era and modern is every later era, and all 7 cards in both the top ten and the top twenty-five are modern.
The printed rarities among the leading Shieldon cards are 5 Uncommons and 2 Commons, and the same split holds across the top twenty-five. The most valuable Shieldon cards are therefore all standard Common and Uncommon prints, with the promo Common from DP Black Star Promos at the head of the list.
By the value of its single leading card, Shieldon ranks 453rd of 1020 species with priced cards. Its evolution line has one other member, Bastiodon, which ranks 253rd of 1020 by the same measure. Shieldon card value is concentrated in one promo card that sits well ahead of everything else, while the remaining cards in the line sit much closer together.
Written from market data as of October 29, 2026; the table updates live.

タテトプス
Rock · Steel
Shieldon is the Shield Pokémon, a Rock/Steel type based on a ceratopsian dinosaur with an armored face that evolves into Bastiodon at level 30. Multiple Shieldon appeared in the anime episode Ill-Will Hunting!, where J tried to capture them.
ShieldonBastiodon
No published index yet — too few of Shieldon’s cards trade often enough to strike one.
ShieldonAstral Radiance · 109 · Normal$0.260.0%73Quant score73 / 100
ShieldonPitch Black · 061 · Normal$0.25+8.7%91Quant score91 / 100
ShieldonSteam Siege · 69 · Normal$0.270.0%70Quant score70 / 100
ShieldonUltra Prism · 84 · Normal$0.270.0%63Quant score63 / 100