Alright, finally hitting another umbrella tag after topic #31512. Arguably also a sequel to topic #29502.
This is not a huge umbrella tag, but the main problem is that people consider Mordred (Fate/Apocrypha) to be used in the same way we use like, Jack the Ripper (Fate/Apocrypha) - as an umbrella chartag rather than a costume chartag. the current wiki for mordred (fate) is certainly not helping matters. Which means we get a lot of things like post #9350685 getting tagged with what is arguably 2 costume tags. Which isn't too surprising since well... Memories at Trifas also originated from Apocrypha.
And as a costume tag, Mordred (Fate/Apocrypha) is encompassing 2 or 3 distinct looks (yes, all of which appear in Fate/Apocrypha, none are original to FGO, see post #4736484) - her full armor, her helmet removed, and her revealing red clothes. We could make three different costume tags for each ascension, but her first and second ascensions are identical plus or minus a helmet, so making one for both seems superfluous this take brought to you by the person who decided to make two tags for Saber Alter (First Ascension) and Saber Alter (Second Ascension) which was probably a mistake, and only making a tag for her third ascension--which I think most would consider her default--would instead imply that her armor is her default. Guess we could make an (armor) costume tag which is unofficial but... IDK, I don't have any great ideas. But as it is, Mordred (Fate/Apocrypha) is not a useful tag.
At least her Swimsuit alt has a common through-line, so we don't have to deal with that.