MF/H- Gravity Perseus 85RS/RSF- strongest defence type

Ok, so I tried this weird combo with gravity destroyer/perseus. The trick is that it has terrible stamina with the rubber tips and it goes through a lot of criticism, but has a stone wall like defense and is awesome to watch stand in the center taking all the attack like it was a feather. If you know how to improve this while keeping the defense, please tell me!
To post a thread for a specific combo you must have tests to back it up. This could go in either random thoughts or Build Me a Combo#2. Either provide tests or this will be closed.