16 Votes in Poll
Personally, close between Akira and Giovanna, but I can see Akira getting black armor.
I can see Giovanna getting Black Armor. I also imagine her wearing the skinny, lanky variant of Black Armor. Would've been a better choice to make her a Black Armored enemy in Lighthouse Reverse than making Daisuke a Black Armored enemy.
I agree that replacing Daisuke with Giovanna is a better choice.