Years ago, Batman declared during his vigilante career:
"I Am Vengeance!
I Am The Night!
I Am Batman! "
He has been living up to his vows for many years. Fight crime, help the weak, and try to hold the other end of Gotham's scale so that it doesn't continue to tilt.
But he will always grow old and become powerless. During a crime fight, he fell from the roof of a building and was unable to struggle.
When he opened his eyes again, he woke up in the Batmobile.
This is Gotham, with Batman, Robin and Alfred as humans.
He looked at the people around him, then looked down at his paws, and said his first words:
"Meow?"
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They decided to adopt the black cat and named him:
"Gotham Catman."
Concept: the feelings of small animals