Alexandra used a zaku cannon for the battle of jaburo as well as a few other instances, it was destroyed by the blue and white full armor gundam, after its destruction she would receive her Z’Gok E.
“ONLY 28 SUITS MADE IT!?! We will NEVER be able to take Jaburo with such a small group!!!!”-Alexandra Itsumi, November 30th 0079
So I always wanted to have a zaku for my character, however I wanted it to be special, so I went with my favorite zaku variation the Zaku Cannon, and pretty much what may happen is that I might make a MG of certain suits, when I do that they typically overwrite the story I already made so I apologize for any retcons I make, like the ones made here