Stalked

Bruce was restless, deeply disturbed by what he'd just seen.  When it stopped raining, he took the opportunity to get out of the house.

It seemed that no matter how many years passed, and no matter where he went, the image of a bat haunted him.
Wayne Manor was built on top of a large system of caves filled with thousands of bats; it had taken Bruce years to learn not to be afraid of them as a child.  His father dressed as a bat for Halloween, and it was that very night that he'd been murdered.  Now, on the eighth anniversary of that night, Bruce was haunted by a bat once more.

Suddenly, Bruce stopped in his tracks.  Deep within his own thoughts, he didn't realize that he'd wandered into a dark alley.  Apparently, his mind's current fixation on his parents' murder had inadvertently led him here while he wasn't paying attention.
He started to take a step back, but stopped.  His imagination took hold of his thoughts, paralyzing him in the moment.  He could see the events of that night playing before his mind's eye: the moonlit gun sliding into view.  The shots being fired.  His parents falling to the ground.
He wanted to step forward into that vision; to do something—anything—to change it all.  But he couldn't.  No matter how hard he wished, he couldn't stop it from happening.
The vision continued.   Bruce sat, kneeling between his parents' bodies.  The gunman slowly slipped back into the night and disappeared.
Bruce's fists clenched and his jaw tightened.  He stared at the back of the man as he ran away, his eyes burning with rage.  The police had never caught the murderer.  They never even had any clues.  All they could find was a name: Joe Chill.  It probably wasn't even his real name.  In all likelihood, he'd never be caught.
Suddenly, Bruce snapped out of his trance.  The rain had started again.  Ahead of him, two rather rough-looking men—each with a switchblade in his hand—were slowly walking towards him.  Bruce held still, but turned his head to peer backwards over his shoulder.  Two more men were coming from behind.
Bruce gently slipped his left foot backwards, ready to snap into a fighting stance if need be.  He knew he could take on one attacker, maybe two... but four?  He wasn't so sure.
They moved closer, slowly... Bruce was becoming more and more sure that he was going to be stabbed.  What nearly frightened him was the fact that he didn't really care.
The two men in front were mere feet away.
*FWOOOOSH-BAP*
A huge black blur swooshed through the alleyway, knocking both the men to the ground with a hard punch.  Bruce heard it zip through the air in a wide arc above him, but couldn't see it through all the rain and lightning.  He turned around to see the two thugs behind him slowly stepping backwards, bewildered by what they were seeing.  Bruce spun around again and looked upwards, where they had been looking.  On top of a fire escape perched a bat-shaped creature.  It looked somewhat like a man, but sheathed in black, with twin bat-ears and black wings that jutted sideways from his back.  His eyes glowed a solid white, and his jaw was firmly set.  Lightning flashed, illuminating the blood-red underside of the wings.
Bruce stood still in shock.  He was eternally stalked by this creature; this elemental force of nature.

Bruce was so entranced by this demonic figure that he had failed to notice a third mugger hiding next to a dumpster behind him, one who had not noticed the giant bat.  As this man readied his knife-hand to shove forward into Bruce's back, a voice from the street behind called out.
"Tlah reggum!"
Abruptly, the mugger stopped in mid-stab, his knife a good several inches away from Bruce's spine.  Bruce turned around to see Zatanna at the alley's end, her hand extended towards the man.  As Bruce opened his mouth to ask her what she was doing here, she looked up and saw the bat.
After being spotted by Zatanna, the man-bat turned his head to the skies and jumped with wings spread, gliding upwards and over the buildingtops.
Zatanna stepped into the alley, incredulous.  "Bruce... what was that thing?"
"I... I don't know..."