Brock's Onix is a Rare Pokémon TCG card from Gym Heroes illustrated by Benimaru Itoh.
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Brock's Onix is a Rare Pokémon TCG card from Gym Heroes illustrated by Benimaru Itoh.
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Brock's Onix (#21) is a Pokémon TCG card from Gym Heroes with rare rarity. GrailHub tracks card details such as set, card number, rarity, illustrator, type, and market snapshot where available, so collectors can understand both the card identity and its place inside the set.
Illustration credit is tracked for Benimaru Itoh, and the page links back to the set, brand, category, and related cards. That structure helps collectors move from a single card into nearby cards, alternate printings, and other cards from the same release lane.
Market snapshot
Market data from Cardmarket · Last updated Jun 16, 2026
Card data provided by Pokémon TCG API.
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