Houndoom is card #15 of 147 in Aquapolis (2003), a Rare illustrated by Hajime Kusajima. At about $139 it is the #43 most valuable card in the set. In an Aquapolis booster it turns up about once every 68 packs. It is one of 45 Houndoom cards printed so far.
2001Neo Discovery
2003Aquapolis
2004Team Magma vs Team Aqua
2009Platinum
2012Dragons Exalted
2015BREAKthrough
2019SWSH Black Star Promos
2022Brilliant Stars Trainer Gallery

















See the full Aquapolis card list
An ungraded Houndoom from Aquapolis sells for about $139. A PSA 10 is worth more, roughly $1,806 by our estimate, and a PSA 9 around $556.
It is a Rare, and it shows up about once every 68 Aquapolis packs.
Hajime Kusajima 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.