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- The outlines in the first gallery's artwork (non-Team Rocket) are pitch-black, whereas the outlines in the second gallery (Team Rocket) are more of a very dark grey (for the grunts, anyway)
Non-Rocket HGSS artwork
Team Rocket HGSS artwork
More Sugimori VS Unno
- HGSS appears to be the first time Unno has drawn any human characters, and also has not illustrated any TCG cards of Generation II Pokémon, the subject of the most recent batch of Game Freak Pokémon artwork.
Official Game Freak artwork of Pikachu, by Sugimori
Official Game Freak artwork of Raichu, by Sugimori
Rocket Grunts in FRLG, by Sugimori
HGSS grunts, again for comparison