Check out concept art of the "Bat Creature" from the Wayne Family Crypt scene in Batman Vs. Superman as well as the DC Comics Multiverse action figure.
The text on the concept art reads:
The nearby family crypt containing the remains of his parents, Thomas and Martha, is also in a similar state of neglect. It is a reminder of the night they were murdered, when the three of them went into the city to take in a movie. The loss of his parents at such an early age was the impetus for his crime-fighting career, but that event still has the power to invade his sleep with nightmarish visions, all these years later.
Looks a bit like Man-Bat, too.
"Batman v Superman: Dawn of Justice" is directed by Zack Snyder starring Ben Affleck as Batman, Henry Cavill as Superman, Gal Gadot as Wonder Woman, Amy Adams as Lois Lane, Laurence Fishburne as Perry White, Diane Lane as Martha Kent, Jeremy Irons as Alfred, Jesse Eisenberg as Lex Luthor, Ray Fisher as Cyborg with Callan Mulvey, Holly Hunter as Senator Finch and Tao Okamoto as Mercy Graves. J
Fearing the actions of a god-like Super Hero left unchecked, Gotham City’s own formidable, forceful vigilante takes on Metropolis’s most revered, modern-day savior, while the world wrestles with what sort of hero it really needs. And with Batman and Superman at war with one another, a new threat quickly arises, putting mankind in greater danger than it’s ever known before.
Click to enlarge: