A Vigilante Harvest

This city was falling apart and that suited him just fine.
Monster was squatting on the ledge of the building, right on top of the remains of what used to be a stone gargoyle that was destroyed by some rioting punks not so long ago. The store immediately below had it's windows boarded up, shattered glass and discarded mercendise littering the sidewalk in front of it. Beside and across the street was a similar scene: looted stores, broken windows and a few smashed and burnt cars. All signs of the loss of control the authory had here, either due to being stripped of funding, corruption or simply being overwhelmed.
Corruption. Ahhhh. A long tongue briefly licked his jagged lips, feeling an all too familiar hunger start to throb in his chest. Corruption leds to sin...sin leads to damnation. What that meant depended on the person and what they believed: he honestly didn't know, nor care. Monster just knew he had a calling, a duty to help the damned reach their final destination, whatever it was. It was his way of helping to clean up the world, one soul at a time, even if the powers that be didn't apprecate it.
He leaned forward, his talons gripping the gargoyle's remains as he looked down upon the masses below, his normally green skin currently grey to better hide him at night. Not that doing so mattered much anyway: most people were glued to their phones, never bothering to look up. They may has well be mindless zombies. A bunch of zombies hopping from bar to bar, looking for booze and sex to escape the reality their world was in a state of decay.
Monster felt that throb in his chest again, only stronger. This time he knew it wasn't due to his own throughts, but that his 'damned' sense was tingling. A soul that was condemned was close by, a soul that needed to be harvested. He squinted his eyes and looked, only seeing grey and lightly pink souls thus far. The temptation to move to a higher position to get a better range of view was there, but he knew from experience his special 'sight' wasn't great at a distance. Instead, he pressed himself against the wall and 'spread' himself across and down the building as small vines along the mortor and cracks of the brickwork. This was taxing and he wouldn't be able to hold this shape for long, but it would be long enough to give him a better read on what direction his target was in.
East.
He pulled himself back into his default form, before shifting again into a more feline shape. He prowled long the ledge and leapt to the adjacent building, looking for his prey.
A scream. Just ahead.
Quickly he ran in that direction, the throbbing getting more intense. At the source, he looked down, seeing an skippily clad woman on the ground. Hovering over her was a clean cut man wearing black jacket and pants, a knife in one hand: he as the one he sought.
"Nothing personal, but I need my fix," the man was saying, a certain 'hunger' in his tone. Monster shifted back to his normal form, but with membranes between his arms and torso.
"Please...just take my purse!" the woman was pleading, as he jumped off and softly landed behind the man. "I won't report you to the police!"
"It's not money I want," the man laughed. "Scream if you want...no one will save you."
"You sure about that?" Monster growled.
The man spun around, the knife flashing in the dim light toward Monster's face. He leaned back to avoid it, while stretching out his tail to capture that arm. Then he punched the man in the gut, followed by an uppercut to his chin. The man dropped to the ground, the knife slipping from his hand and Monster flicked it further away with his tail.
"Leave," he told the woman, whom was looking on in shock as he picked up the man by the shirt. "You don't want to see this." It took a couple of seconds, but the woman finally complied as she scampered to her feet and fled.
"What...are you?" the man groaned.
Pfft...must be new here. Monster rolled his eyes as he gave his usual response. "Your judge, jury and executioner. Get ready to go to whatever version of 'hell' you believe in."
With that, his chest opened up, revealing bottomless chasm within. At once, the man's dark soul was sucked into it, leaving the shell that was once his body whithered and pale. He dropped the corpse and immediately started scaling up the building and out of sight. While Bystander Syndome made it unlikely anyone bothered to call 911, he was not one to take chances. The police disliked him as is and he wasn't immune to bullets.
Ah, this is a heavy one. He stopped a moment on the rooftop to assess what he had just harvested. Felt like he wouldn't 'need' to harvest another for a day or two. A pity. Monster enjoyed sending damned souls to their ultimate fate, but he had a limit on how many he could harvest at a time and a heavy one like this meant he was 'full' for now.
He pondered for a moment of just doing a normal patrol and stopping any normal crime, but opted against it. Time to go home. Tomorrow was another night and all the damned souls will still be out there.
Waiting for him to harvest them.