The Pokémon TCG hides Slowbro in the background art of 2 cards. The cameos sit across 2000, with Sumiyoshi Kizuki and Ken Sugimori responsible for several of them.
These cameos cluster in Gym Heroes most heavily; Sumiyoshi Kizuki accounts for 1 of the appearances.
2 cards with Slowbro in the background spanning 2000, with art by Sumiyoshi Kizuki and Ken Sugimori.
Slowbro appears as a background cameo across 2 Pokémon cards.
These appearances range from clear sightings to barely-visible silhouettes, scattered across 2000 of the TCG.
Each cameo rewards collectors who pause to look closely at the card art.