VGFacts

 So... the North American exclusive One Piece game for the Game Boy Advance was a side-scrolling platformer. However, the game used both modified sprites and music from a One Piece game never released outside of Japan, One Piece: Grand Battle Swan Colosseum for the WonderSwan. This topic however will just focus on the sprites...


 
 One Piece GBA Luffy sprites
 One Piece WonderSwan Luffy sprites

 One Piece GBA Sanji sprites
 One Piece WonderSwan Sanji sprites

 One Piece GBA Tashigi sprites
 One Piece WonderSwan Tashigi sprites


 
 

I don't know if I'd consider this trivia - a lot of games in a series reuse sprites as they make other games within their series. You'll notice it quite a lot in games like Mega Man.

Kinda figured it would've been, considering the One Piece GBA game was made exclusively for the US, and that One Piece: Grand Battle Swan Colosseum was never seen outside of Japan... not to mention that they're two completely different games gameplay-wise.