Henry stickman! Using the evidence, he is EXTREMLY hard to kill. (seeing as he has died six-thousand times.) he can also pull out any weapon out of his pocket, (look at the games if you don't belive me!) so if he can pull out a metal tails himself, (henry stickman: infiltrating the airship.) he can definitly deestroy metal tails.
Even if he has to die 3 million times.