Someone I was collaborating with back in the days of BBS and no WWW, worte a character named Talyn and said she was based on me. It was an altered spelling of "talon". Something about "velvet paws concealing razored claws". It became my pseudonym, but because people kept mispronouncing it, I removed the "y".
The SG - acknowledging my sliver streak since my teens and a tendency to react like an old grizzly bear when it comes to defending "family" and territory.