I know of 1-2 other Kastle's, although spelled Kassel. We call him Loppy a LOT (I know, very dignified). I started calling him Kastle-Tassle-lopolus and then Kastle-lopolus and then lop to Loppy lol. Who knows...
Backup is Bear, Spaz, Freak.
Shamoo is Moo or Cow.
Arnold is noodle bear or doodlebutt.
Why I even name is a mystery. lol