Across 2 Pokémon TCG cards — drawn 2022–2023 — Rillaboom appears in the background art rather than as the featured pokemon. The cameos rotate through HYOGONOSUKE and Nelnal and other contributors.
Silver Tempest contains the most Rillaboom cameos in any one set, while HYOGONOSUKE is the artist most associated with Rillaboom background appearances.
2 cards with Rillaboom in the background spanning 2022–2023, with art by HYOGONOSUKE and Nelnal.
Rillaboom appears as a background cameo across 2 Pokémon cards.
These appearances range from clear sightings to barely-visible silhouettes, scattered across 2022–2023 of the TCG.
Each cameo rewards collectors who pause to look closely at the card art.