No he never came back, unfortunately. There was a big black tom cat running around when he disappeared, so we are thinking that that cat did something to him. She's now adopted a new little kitten, which I need to take some pics of and put up for stock use here on DA. Real adorable.
I did drawn him when he was a little kitten, for an ACEO. I have so many cats I want to draw, my pile is endless.