“Ailuros” is “cat” in Greek. “Kallailuros” would be “pretty/cute cat.”
A friend who is a landlord and restaurant waiter in Athens has a cat which he named “Chico” but that was an obvious borrowing from the Spanish. (He himself is Athanasios.)
Well, there’s always Zeus. Or Pan. I had a ‘Pan’ (short for Pan Ze Doodle). Or you could read off the list of Greek mythological figures from Wiki until one sounds right.
Basilious, means ‘king of kings’ or some such. You can call him Basil for short. It served my big orange tom well for 24 years, and he was king of the block.
If you’re willing to settle for an immigrant, Xerxes also works well for cats.
How ‘bout Antigone? Oedipus’ bad-ass daughter, defies the tyrant of Thebes to secure a proper burial for her brother killed in battle against the city. Sophocles was running on all eight cylinders when he wrote her play.