See, I got this request to add by a very unimaginative male, who took his screen name directly from Aqua Teen Hunger Force shown on Cartoon Network most nights. He thought I might be his lil snookums. He was embarrassed to learn the mistake, and I took the opportunity to educate him. I was persnikitty, a variant of persneckity (I didn't dare try to explain semantical puns) meaning anally retentative. It was not based on any animated character at all. He eventually found his SO (for the time being).
I'm just glad I found that name prior to that animated movie, or whatever it was. I only learned about that show (or whatever) very recently, having grown a tad curious. And I chose that one since alicat was so overused, it looked like zip codes or phone numbers....I can just see someone using alicat8675309 (like that would be original). Enter persnikitty. And all the hangers-on. How I love me! *cackle*