He is the cat which Muhammed had sent previously. And he is mad!
He leaps from the carriage and jumps on Muhammed’s face, and claws him viciously. Then, he leaps on Henry’s face, and claws him too! Then leaps on the bein hazmanim machine and claws it until it is broken to bits.
Then he purrs softly at them, and says, “Muhammed, I have waited for this moment for 400 years.”
Muhamed says, “you mean for negative 400 years?”
The cat, whose name is Nancy, says, “yes, but I say 400 years because years are just as long in one direction as in the other, and it is harder for people and cats to conceptualize negative years.”
Henry is so shocked, that he chokes on his chewing gum, and falls into a coma, from which he may or may not ever awake.