It was a normal day in Gotham and in Avian enterprise. A man named Bruce Avian was working on a suit that could shrink and gtow someone by increasing and decreasing the space in atoms. But then a man named Bane broke in and tied to take the suit but failed. But Bane did end up stealing Bruce's famialy ring.
Bruce tracked down Bane to the LexCorp skyscraper. He used the suit to shrink down to the size of an ant to take out Banes' goons. He jumped on Bane's goons and punched then(which would feel like a small knife because of the density of his fist.)
But Bane hacked Bruce's suit, causing him to shrink rapidly and turned Bruce into a black hole. Unfortunately, the black hole got so big, it devoured the universe and the black hole slowly burned itself away due to hawking radiation.