The user, https://memo.cash/profile/14xMz8rKm4L83RuZdmsHXD2jvENZbv72vR , made it, Unwriter, a pretty active developer who makes things for BCH.
I like the idea :) simple and in some times useful
I think the cats are generated with the Address as a seed,
Should look the same if you enter the addresses, easier to remember a catface than a string.
