I've met so many cats with 'purr' names -
Percy,
Percival,
Perdita - that they hardly seem human any more. I had an elderly relative who was either
Percival or
Percy, but he died when I was a toddler so I've got no memories of him.
I prefer
Percival.
Percy on its own used to be a social-climber of a lnfn, and the -y ending makes it sound, not exactly feminine but not exactly macho either.
Percival has a good Arthurian vibe, but I'd only consider it as a mn, if at all.