Disclaimer - I didn't write down what I was doing as I went - so this is NOT a pattern. It's more like a trail of crumbs, my friend. Follow if you already know how to crochet and don't mind figuring out quite a bit yourself.... :)
First, follow this pattern using cream colored yarn, but don't make legs or ears: http://www.lionbrand.com/patterns/80095AD.html?noImages=
For the black robe, I just traced a pattern, single-stitch crotched it,
dropping and adding stitches to make each row the right length. I made
two of those and then sewed them together. Start at the bottom of one side, go up and just past the shoulder, then run the yarn through the back of the neck, sewing the pieces together again at the other shoulder, finishing by sewing down.
Same thing with the hat - shaped it as I went, ripped some out, started over, repeat....
If I make another one, I promise to count stitches and write it all down as I go!