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5 facts about this card
Brock's Onix is one of the standout named Pokémon from Gym Heroes, the landmark set that brought Kanto Gym Leaders and their personal teams into the TCG for the first time in English.
This card’s Bind attack is a direct nod to Brock’s Onix in the original games, where Pokémon Yellow famously gives Brock’s Onix Bind even earlier than Onix normally learns it.
For anime fans, Brock’s Onix is the same iconic powerhouse that debuted in "Showdown in Pewter City," the battle that introduced many collectors to Brock as Ash’s first major Gym challenge.
The card’s artwork was illustrated by Benimaru Itoh, a Nintendo-connected creator who only contributed a small handful of Pokémon TCG cards, giving this WotC-era piece extra illustrator appeal.
In Japan, this version of Brock’s Onix was also tied to the Nivi City Gym theme deck, reinforcing how closely Gym-era cards were designed around each Leader’s identity rather than just the species itself.
Card Reference
Brock's Onix [1st Edition] is a Pokemon trading card from the Pokemon Gym Heroes set, card number 21. This card has a Rare rarity, is printed in English, belongs to the Wizards of the Coast era, and was released in 2000. The current market price is $14.93, based on recent Raw NM sales tracked on Double Holo.
The current market price of Brock's Onix [1st Edition] is $14.93. Market price reflects recent Raw NM sales on Double Holo and updates as new sales come in.
Brock's Onix [1st Edition] is from the Pokemon Gym Heroes set, card number 21, released in 2000.
Whether Brock's Onix [1st Edition] is worth grading depends on its condition and the graded population for the card. Higher grades command larger premiums, so review recent graded sales and use Double Holo's Grading ROI tools to weigh the cost of grading against the expected graded value before submitting.
You can buy or sell Brock's Onix [1st Edition] on the Double Holo marketplace, which pairs live listings with a bid and ask order book, so you can set your own price or take the best available offer. Sellers pay a 4.9% platform fee on completed sales, with a $1 minimum.