I think there was a KA episode where he said that he drew some of Subeta's items. Do they still exist or have they been revamped? x]

I think Black Cat, original version was one of them. Or, was it Fat Cat?

But, yeah, both of them were revamped.

Aww, I wanted to see Keith's art skills XD

You could always check his dA page. ;) Though I'm actually not sure if he has anything posted on it besides photos.