Track Pokemon Card Prices & Values

Double Holo is the free POS and inventory software for card vendors, the best Pokemon card scanner, and the best Pokemon card price tracker, built on a marketplace of 158,304 collectors.

Download on the App StoreGet it on Google Play
About UsArticlesChangelogSet GuidesPremiumPricingResourcesPrivacyTermsFor VendorsContact UsMaster Set CostsCard RaritiesPokemon Card PricesCard Value CheckerBrowse SetsCardsNearby
Tools
Grading ROI CalculatorPrice AlertsPrice HistoryPack EV CalculatorAI Card PicksCard SentimentCard ScannerCollection Tracker
© 2026 Double Holo Inc. All rights reserved.© 2026 Pokémon. ©1995 - 2026 Nintendo/Creatures Inc./GAME FREAK Inc. TM, ®Nintendo.
Double Holo
Double HoloDouble Holo
Sets

Menu

HomeMarketplaceSetsDaily BriefNEWChangelogPremium ToolsPROSubmissionsPRO
Sign InJoin
Viewing
HomePokemon Card SetsPokemon Gym HeroesBrock's Onix #21

Brock's Onix Pokemon Gym Heroes #21

Wizards of the Coast•2000
$11.06Market Price
Raw NM
Collect this card onShinyShiny

No listings for Raw NM

Price History

+28.9%|+$2.48
Showing prices for: Raw NM

Market Prices

Loading price data...

Brock's Onix Card Facts & History

5 facts about this card

Card History

Brock's Onix stands out as a rare, non-holo Stage Basic from Gym Heroes, giving one of Brock's signature partners a surprisingly premium slot in the set's early Trainer's Pokémon lineup.

In-Game

This card directly echoes Brock's role as Pewter City's first Gym Leader, whose Onix is the iconic roadblock many Kanto players remember from their very first badge battle.

Card History

Its Bind attack is a neat lore callback, because Brock's Onix is specifically noted as using Bind in both the original games and the anime.

Set Lore

Gym Heroes was the first English Pokémon TCG expansion built around named trainers and their partner Pokémon, which makes Brock's Onix feel like part of the moment the game started telling character-driven stories on cards.

Artist

Illustrated by Benimaru Itoh, the card captures Brock's ace in motion rather than a static pose, a style choice that helps it feel more like a scene from a Gym battle than a simple monster portrait.

Card Reference

About Brock's Onix (Pokemon Gym Heroes #21)

Brock's Onix 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 $11.06, based on recent Raw NM sales tracked on Double Holo, with 1 listing currently for sale.

Check another Pokemon card's value by name, set, or number.

Over the last 90 days, the Raw NM market price has ranged from $8.58 to $11.06, with a median of $8.76.

Card details

Set
Pokemon Gym Heroes
Card Number
#21
Rarity
Rare
Release Year
2000
Language
English
Era
Wizards of the Coast

More Pokemon Gym Heroes cards

Previous cardBrock's Golem [1st Edition] #20Next cardBrock's Onix [1st Edition] #21

Frequently asked questions

What is the current market price of Brock's Onix from Pokemon Gym Heroes #21?

The current market price of Brock's Onix is $11.06. Market price reflects recent Raw NM sales on Double Holo and updates as new sales come in.

What set is Brock's Onix from?

Brock's Onix is from the Pokemon Gym Heroes set, card number 21, released in 2000.

Is Brock's Onix worth grading?

Whether Brock's Onix 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.

How can I buy or sell Brock's Onix?

You can buy or sell Brock's Onix 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.

Approximately 100 PSA graded copies tracked.

Go back to Home

More Onix cards

  • Onix [Reverse Holo] - Pokemon Legendary CollectionOnix [Reverse Holo] - Pokemon Legendary Collection$153.87
  • Onix [Trainer Deck A] - Pokemon Base SetOnix [Trainer Deck A] - Pokemon Base Set$127.06
  • Onix [Reverse Holo] - Pokemon AquapolisOnix [Reverse Holo] - Pokemon Aquapolis$85.00
  • Onix [Series II] - Pokemon Japanese VendingOnix [Series II] - Pokemon Japanese Vending$70.00
  • Onix - Pokemon Southern IslandsOnix - Pokemon Southern Islands$60.53
  • Onix [Reverse Holo] - Pokemon Unseen ForcesOnix [Reverse Holo] - Pokemon Unseen Forces$41.00
  • Onix [Reverse Holo] - Pokemon Team Rocket ReturnsOnix [Reverse Holo] - Pokemon Team Rocket Returns$37.98
  • Onix [Reverse Holo] - Pokemon Fire Red & Leaf GreenOnix [Reverse Holo] - Pokemon Fire Red & Leaf Green$28.63
View all 102 Onix cards

More Brock cards

  • Brock's Grit [1st Edition] - Pokemon Japanese 20th AnniversaryBrock's Grit [1st Edition] - Pokemon Japanese 20th Anniversary$169.69
  • Brock's Ninetales [1st Edition] - Pokemon Gym ChallengeBrock's Ninetales [1st Edition] - Pokemon Gym Challenge$162.50
  • Brock's Rhydon [1st Edition] - Pokemon Gym HeroesBrock's Rhydon [1st Edition] - Pokemon Gym Heroes$133.08
  • Brock [1st Edition] - Pokemon Gym HeroesBrock [1st Edition] - Pokemon Gym Heroes$95.65
  • Brock's Ninetales - Pokemon Gym ChallengeBrock's Ninetales - Pokemon Gym Challenge$78.58
  • Brock's Grit - Pokemon Team UpBrock's Grit - Pokemon Team Up$77.71
  • Brock's Kabutops - Pokemon Japanese VsBrock's Kabutops - Pokemon Japanese Vs$68.56
  • Brock's Crobat - Pokemon Japanese Limited VSBrock's Crobat - Pokemon Japanese Limited VS$50.00
View all 125 Brock cards