Look past the front-of-card pokemon and Shellos is there — 1 time across the TCG, drawn between 2017 and 2017. TOKIYA's work shows up most often.
These cameos cluster in Crimson Invasion most heavily; TOKIYA accounts for 1 of the appearances.
These cards feature sea slug, water, dynamic and two pokemon in their background art, illustrated by artists like TOKIYA.
Shellos appears as a background cameo across 1 Pokémon card.
These appearances range from clear sightings to barely-visible silhouettes, scattered across 2017 of the TCG.
Each cameo rewards collectors who pause to look closely at the card art.