Voltorb is card #80 of 101 in Hidden Legends (2004), a Common illustrated by Kyoko Umemoto. At about $25.80 it is the #50 most valuable card in the set. In a Hidden Legends booster it turns up about once every 6 packs. It is one of 40 Voltorb cards printed so far.
1999Base Set
2003Skyridge
2004Team Rocket Returns
2007Secret Wonders
2012Boundaries Crossed
2016Evolutions
2019Hidden Fates
2023151

















See the full Hidden Legends card list
An ungraded Voltorb from Hidden Legends sells for about $25.80. A PSA 10 is worth more, roughly $335 by our estimate, and a PSA 9 around $103.
It is a Common, and it shows up about once every 6 Hidden Legends packs.
Kyoko Umemoto drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Hidden Legends 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.