Well yes, I do. Not only does Harry Potter not have a preparation key from what I remember, but he also does not need a gun. However, if Harry Potter was in a vs thread against the outerversal super demon who can only be defeated by a bullet, and he was given prior knowledge and a year of prep time, I think nobody would argue that he would be able to acquire a gun in that time and come and shoot him and win. For obvious reasons, it’s not something that would be listed on the profiles since it doesn’t fit into standard or optional equipment, and doesn’t have a place in his Powers and Abilities section either. On the other hand, metal knight having child emperor’s tech abilities would be something that would need to be listed in the profile since it’s a whole catalogue of potential new abilities that isn’t already something people would know he obviously has access to.
If you were paying attention you’d know this is already considered. As said before, child emperor’s gadgets themselves wouldn’t be part of his equipment section, but the technology used to create them would indeed be represented in metal knight’s preparation key abilities.
So quick to end the discussion and try and close the thread before I even respond to your new arguments