pureEva says on her flickr page that she isn't sharing the patterns for her amigurumis, but I still wanted to feature this adorable oni. If you click on the photo to enlarge it you can see there's some fairly elaborate stitching on the tummy. I also really like the technique she used on the spines, which look like she has chain stitched around them in a slightly darker colour. Adorable, and it gives me some new techniques to try on future amigurumis.
You can view more pictures of this critter, its blue companion and pureEva's other unique and unusual creatures in her Amigurumi flickr set.