Saber

Saber is one of four Udon Servants created by Leonardo da Vinci with the intention of keeping the story of the comic busy. Found by Artoria while still an udon larva, she infuses it with her spirit to insure it will become a Saber-class Servant. She gives it to Mash because it will "surely bring harmony to the world" if she raises it. After believing herself to having not raised Rider correctly, Mash is hesitant, but decides to take Saber after noticing Artoria slowly eating the udon.