Aliasing leaf_(pokemon) -> blue_(pokemon).
Reason: Leaf is a fan name.
Blue is her official name from the japanese version of the manga.
The name Leaf isn't used in any official works or products. With no official source, (except as one of the 18 or so default names. It appeared for either gender but only in the LeafGreen version of the game) it shouldn't be used. The only differences between the Game and Manga versions of the character are their eye colors. The male protagonist in both the game and manga share the same tag, and a fan-name shouldn't stop the same for the female.
Nintendo claims she has no name, that it's up to the player. The character Blue in the (japanese) manga shares the same appearance (in later volumes), so Blue should be the tag for both.
Updated by jxh2154