The defining feature of this group of creatures is that they almost always have an angry expression on their adorable neko ettin faces.  I think most or all of these angry kitties are descended from various mixings of norns born from Tue's modified genetic lines, & killer grendels.  So beware, some of these norns may prove dangerous to your other creatures, but I don't think they are as bad as pure bred killer grendels. 

I don't know why I find angry cats so cute, but after I saw how cute these little creatures were, I couldn't resist trying to save their genetic files so I can always hatch another little monster whenever I want.

Some of these might be fast agers, others age at normal speed, but most I do not know how fast they will age because they were born after very random splicings with other creatures, or in the case of Zajaoe, playing with Amaikokonut's Highgen Generator.  Not only do I not know how fast they will age, but I also do not know what other weird mutations & traits they may have.  A few of these might be able to survive under water & even swim, depending which version of the swimming norns agent you have.