sowsow is credited on Pokémon Trading Card Game cards since 2018, with artwork appearing through 2025. The catalogue includes more than 100 cards, spanning series such as Sword & Shield and Scarlet & Violet, with set appearances including Fusion Strike, Lost Thunder, and Paldea Evolved.
The work is characterized by whimsical, cartoon-forward illustration with a lighthearted, cheerful tone. Compositions tend toward balanced layouts with frequent dynamic staging, keeping subjects clear and character-focused. Color is a consistent anchor, favoring vibrant palettes often tempered by soft and pastel harmonies. A representative card is Bunnelby (SWSH Black Star Promos, SWSH082). Among the most sought-after cards illustrated by sowsow is Gengar VMAX (swsh8-271).