Look past the front-of-card pokemon and Lugia is there — 5 times across the TCG, drawn between 2001 and 2022. Naoyo Kimura, Aya Kusube and Hataya's work shows up most often.
These cameos cluster in HeartGold & SoulSilver most heavily; Naoyo Kimura accounts for 1 of the appearances.
These cards feature abstract, indeterminate, neutral and clouds in their background art, illustrated by artists like Naoyo Kimura, Aya Kusube and Hataya.
Lugia appears as a background cameo across 5 Pokémon cards.
These appearances range from clear sightings to barely-visible silhouettes, scattered across 2001–2022 of the TCG.
Each cameo rewards collectors who pause to look closely at the card art.