Board Thread:General Discussion/@comment-6527064-20131214113625/@comment-4440927-20140806005223

Shadow Blazin wrote: But, Ben doesn't need to change his arms into swords. The reason why Kevin could do it was because of his Omasion powers (I haven't watched Ben 10 in a long time.) and that he could transform his body parts and absorb power still. Ben in the meanwhile, he can't because of him being only a human, but in this case, Diamondhead isn't a fusion of aliens, so that might also be why Diamondhead can't do those stuff.

Ben has made swords and projectiles from his arms while as Diamondhead. Im saying that AS Ultimate Diamondhead Ben will be able to change his arms/ hands into a more open variety of weapons when needed.