When Roshu is pushed past his breaking point. He becomes this horrifying being of no control that will kill anything and anyone in his path. he also becomes 18ft tall

He can also mimic anyone he pleases to trick them into safety. then kill burtally.

He also takes away Roys energy making roy almost useless against him. He would have to go hyper for a slight chance at beating him. Vincent also can stand a chance against him but when all alone. he will be shredded apart