@voltronpig When you go into the “Barracks” to see the list of your TFs, and hit the sunglasses icon for a TF to see their accessories. Selected accessories have a yellow outline, while the outline is blue for unselected accessories. You can select or unselect an accessory by tapping it. In this screenshot you can see which headgear accessory I have on Dirge:
The Gestalt squad (Omega Supreme and Volcanicus) have a bug where you shouldn’t use the eye accessory for either of them.