Talk:Attila/@comment-32242415-20170712072050/@comment-2606:A000:111F:1C1:C815:F607:3237:6B7E-20170716011620

Apparently Altera was meant to premiere in Fate/Extella and not FGO, but Extella got delayed so a lot about Altera isn't in FGO to avoid spoiling Extella's story before it came out. So hey yeah spoilers ahead.

Altera is orignally an alien sent to destroy Earth. When she goes on about being only meant to destroy, that's true. Altera is her actual name. After being defeated long ago and being left on Earth as a dormant, human-sized copy of herself, she was found by the Mongols and woken up, assuming her to be some divine being meant to lead them to greatness. They named her Attila, and she hated it saying she had wanted a cuter name. When human Attila died, the memories were uploaded to Altera's main body (on the moon... just go with it if you don't know Extra's lore) and Attila, or "Servant Altera" became part of the Throne of Heroes it would seem.

Long story short: Attila is Altera because Altera is her real name and Attila is just what humanity knew her by.