'Your pet isn't holding any battle items.'

I'm not sure how to add items to my Pet's Weapon Showing :(

Do you mean like the weapons that

Anozira has that show up on a profile? These are different than the weapons you put in the armory. They include Dark (Magma, Light, Fire, Earth, Death, etc) Potions and Pylonics. When you click on the item in your inventory, you should see an "Equip Pet" option - that's how you add those weapons to the pet. And those are the ones that will show up on the profile.

Thank you very much, !!