I finally named the new kitty. He is now Max, the Maximum Kitteh (and growing into Maximum Cat). He’s already the tallest feline in the house and looks to be still growing.
He is also most of the time Max the Menace, for his aptitude at turning random objects into toys and either destroying them or causing them to be lost under furniture. This evening he could not settle down, persisting in playing with electrical wires and chewing on cardboard and fussing with the piano until I shouted at him.
Then he curled up against my feet and took an utterly adorable nap.