Also does your character only lack the organs listed in his sheet or is he entirely just skin and this liquid metal?
I saw that you had the majority of this question answered in the Discord chat, but I will add a few details.
Xavier does still have muscles, but they are fashioned entirely out of Dread Metal.
The strength of the Metal is defined in my sheet as "being twice as strong as steel with only half the necessary materials". Meaning that a single inch of Dread Metal would be as strong as 4 inches of steel. 1 inch of Dread Metal is as dense as 2 inches of Steel and it's structural integrity is twice that of steel.
The one organ I left in Xavier is the brain; allowing for enhanced movement in an instant.
I will get the post done as soon as I can. I had some typed up and then I realized I was supposed to be using Xavier.