I'm pretty sure that's not Effie.

AlbionZero said:

I'm pretty sure that's not Effie.

Except she is, check some of the other posts under the tag.

Danbooru's insistence upon Japanese names for characters runs into trouble with franchises like Fire Emblem where a lot of Western fans don't even know what Gardevoir's Japanese name is.

Anyway, you're thinking of Elfi_(Fire_Emblem_IF), who is seriously undertagged because most users don't know that's her Japanese name.