Onix is card #57 of 95 in HS—Unleashed (2010), a Common illustrated by Masakazu Fukuda. At about $1.68 it is the #87 most valuable card in the set. In a HS—Unleashed booster it turns up about once every 5 packs. It is one of 31 Onix cards printed so far.
1999Base Set
2002Legendary Collection
2004Team Rocket Returns
2008Stormfront
2010HS—Unleashed
2013Plasma Freeze
2019Hidden Fates
2022Pokémon GO

















See the full HS—Unleashed card list
An ungraded Onix from HS—Unleashed sells for about $1.68. A PSA 10 is worth more, roughly $13.44 by our estimate, and a PSA 9 around $4.70.
It is a Common, and it shows up about once every 5 HS—Unleashed packs.
Masakazu Fukuda drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open HS—Unleashed booster packs in your browser with the set's real pull rates and keep what you pull in a digital binder. No real cards, nothing to buy.