Nidoking is card #150 of 147 in Aquapolis (2003), a Rare Secret illustrated by Hironobu Yoshida. At about $1,200 it is the #3 most valuable card in the set. In an Aquapolis booster it turns up about once every 261 packs. It is one of 22 Nidoking cards printed so far.
2 copies have been graded by players in Holobrook's grading game. None has come back a 10 yet.
POP 1 is still open for PSA, BGS and CGC: the first player to grade this card a 10 with each company gets a one-of-a-kind POP 1 slab. See the Mint
1999Base Set
2002Legendary Collection
2003Aquapolis
2004FireRed & LeafGreen
2007Secret Wonders
2009Rising Rivals
2013Plasma Freeze
2019Team Up

















See the full Aquapolis card list
An ungraded Nidoking from Aquapolis sells for about $1,200. A PSA 10 is worth more, roughly $15,600 by our estimate, and a PSA 9 around $4,800.
It is a Rare Secret, and it shows up about once every 261 Aquapolis packs.
Hironobu Yoshida drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Aquapolis 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.