mass update le_chevalier_d'eon_(fate/grand_order) -> chevalier_d'eon_(fate/grand_order)
mass update le_chevalier_d'eon_(fate/grand_order)_(cosplay) -> chevalier_d'eon_(fate/grand_order)_(cosplay)
The character's name about absolutely everywhere is listed as "Chevalier d'Eon" (or シュヴァリエ デオン), sans "le" - this makes searching for this character on Danbooru rather counter-intuitive without knowing the tag beforehand.
I genuinely had to go and look for a picture of the character through other means to find out what the correct tag was, because neither saber_ nor chevalier_ autocompleted to the proper tag.
EDIT: The bulk update request #1421 (forum #140483) has been approved by @albert.
Updated by DanbooruBot