Well, my current headcanons for them so far:
-CRT's sword can be used to bashing in heads, but its more potent effect is that it shoots a giant beam out one end.
-CRT's body is some mix of steel and plastic, and impervious to...a lot of things.
-Without his cat skull (and potentially other bits of skeleton), Boneblade is really just... coalesced void, roughly in the shape of some human entity.
-Boneblade also usually wraps up the sword in bandages like the ones on his arms when it's not in use; he can control these bandages with sheer willpower.
-However, considering the fact that he has zero physical muscle, he weighs maybe...40 lbs? 50 max? While CRT is more on the order of 200.
-Neither's particularly tall -- CRT is around 5'3" and Boneblade (he doesn't have an actual name yet) is maybe 5'6".

Good headcanons. I approve

But neither character has a cannon for a head!

...-headdesk-

I love the new siggy 8D

Heh. Thanks. I drew it on an exam and then took a pic and colored it :|

The quality of modern digital cameras makes scanners quite a bit less necessary. :P

Yeaaah, I remember taking shitty pics of my art with my phone camera six years ago. And now it’s almost scanner-quality.

Yup yup! Who needs a scanner these days? 8D I just take pics of my art then color them digitally.

I do want a tablet though. ;u;