YES! Absolutely! I LOVE seeing other people's versions of my characters, I have a whole fave collection of stuff my friends have made, it's one of my favorite things. I actually have a contest going on at the moment, so if the theme sounds fun to you, you're more than free to enter! [link]
YESSSS he is. I absolutely love Malachi, but only in that exact capacity, the "love to hate" kind of one. XD He's a RIGHT BASTARD.
I'm really glad you like the design! How do I come up with it... well, ~Arthulin and I have been collaborating on the Astral Arcana setting, and a lot of times he comes up with the character concepts and then I do all the actual designing work (as is the case with Malachi and Pirossa). As to how he comes up with the plot points... that is a mystery to me.