The Pokémon TCG hides Finneon in the background art of 4 cards. The cameos sit across 2010–2023, with Ken Sugimori, OOYAMA and Saya Tsuruta responsible for several of them.
These cameos cluster in HeartGold & SoulSilver most heavily; Ken Sugimori accounts for 1 of the appearances.
These cards feature floating, underwater, swimming and aquatic in their background art, illustrated by artists like Ken Sugimori, OOYAMA and Saya Tsuruta.
Finneon appears as a background cameo across 4 Pokémon cards.
These appearances range from clear sightings to barely-visible silhouettes, scattered across 2010–2023 of the TCG.
Each cameo rewards collectors who pause to look closely at the card art.