My being a skeleton online mostly happened as a result of me just liking skeletons in general. It started out as the sort of ironic "oh no, spooky scary skeletons" thing that got big in the early 2010's (around the time i started spending more and more time online), but it turned into me genuinely liking them and seeing them as sort of perfect representations of the sort of fun, goofy, harmless spooky stuff I've loved since I was a kid.
As for my username, 'Bones' is just because skeletons, while 'Barlow' is a reference to one of my favorite novels, Stephen King's "Salem's Lot", where the main villain is named Kurt Barlow. I came up with it during a brief period where I considered using it as a pen-name for writing horror since it's honestly more believable than my actual name, and it grew on me fast when I started using it online.
Future Loog Noog production characters... Phil and Hades would both be fun to do, and so would Judge Frollo. Genie would be a lot of fun too, though I'm not sure if I'd be able to pull off all of Robin Williams' impressions and such.