4) He’s Part Of The Nolanverse Canon
Hardcore fans would have noticed the off-hand reference to Killer Croc in The Dark Knight Rises, when some Gotham police officers discuss the rumours of giant alligators living in the city’s sewers. What you might not have realised, however, is that the character has properly appeared in the Nolan Batman universe.
Plugged as being set in the continuity of the Dark Knight films. Batman: Gotham Knight is an animated anthology movie made up of various shorts that was intended to bridge the gap between Batman Begins and The Dark Knight. One segment features a Nolan-ized take on Croc, who’s here a physically-deformed Arkham inmate. Driven mad by Scarecrow’s experiments on him, Croc goes on a rampage which Batman has to stop.
Other Nolan-friendly villains who appear include Deadshot and a version of Firefly called the Man in Black.