Hi and welcome to PGD!

There are several routes you could take, to display your character(s) with different equipment. Probably the easiest is to create frames for every character in all possible combinations of clothing and equipment. The amount of frames would largely depend on how many characters and their motions you have and the various clothing and/or equipment each character can wear.

An alternative is to create frames for characters with their motions in default clothing/equipment and then create frames for all clothing and equipment separately. In the game you then need to combine these frames to form the character you want for any given action.

The first example is supported by most engines, whereas the second is not. So you'll most likely need to write the part of the code that combines frames, yourself.

Hope this helps,