Brock's Onix
Gym Heroes · #69 · Common · Vintage · 2000
Pulling Brock's Onix in a Gym Heroes pack is about 100% (Basic Energy slot). Published, provably-fair odds you can verify.
Every card is real: keep it in your vault, ship it home, or sell it back instantly at 85% of market value. See how the odds are provable →
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Brock's Onix market value
Brock's Onix (Gym Heroes #69) has a live market value of 116 Sparks, about $1.16 at the latest market price. That market price for Brock's Onix was last updated on October 19, 2026. On PackLab one Spark equals one cent of card value, so 116 Sparks is the figure shown for Brock's Onix in the set browser, on this page and in your vault after you pull it. If you pull Brock's Onix, you can sell it back instantly at 85% of market value, which comes to 98 Sparks at the current price. Sparks have no cash value and are only used on PackLab. A Gym Heroes pack is 15,225 Sparks; this card's market value is 116 Sparks. Among the 132 priced cards in Gym Heroes, Brock's Onix is the 129th most valuable. The median priced card in the set is 555 Sparks, and the most valuable card is Erika's Dragonair at 38,858 Sparks.
How to pull Brock's Onix
In a Gym Heroes pack, the Basic Energy slot shows a Common card about 100% of the time. Brock's Onix is one of 42 priced Common cards in Gym Heroes that can fill that result, so landing this exact card is less likely than the rarity figure. These are the published odds for Gym Heroes: the full slot-by-slot table is on the Gym Heroes page, and the odds page explains how each set's rates are built. Every Gym Heroes box commits its card order before the first pack is sold, so each rip can be checked once the box sells out.
Rarity and era
Brock's Onix is a Common card, number 69 in Gym Heroes. Gym Heroes lists 42 Common cards out of 132 cards in total, about 32% of the set list. Among the 42 priced Common cards, market values run from 84 Sparks to 3,136 Sparks, and Brock's Onix ranks 40th of them. Gym Heroes is part of the Gym series and sits in the Vintage era of the PackLab catalog. Vintage sets come from the early years of the hobby, when holographic rares were the main chase and sealed packs were far fewer.
About Gym Heroes
Gym Heroes was released on August 14, 2000 and lists 132 cards on PackLab, 132 of them with a live market price. Together, the priced cards in Gym Heroes carry a combined market value of 430,181 Sparks. By market value, Brock's Onix sits just below Narrow Gym (143 Sparks) and just above Secret Mission (114 Sparks).
