As you walk down the streets at the middle of the night, you decide to take a short cut down a alley way

"AHHHHHHHHHHHH!"

a ear breaking scream is heard from the alley, you rush down the alley

you see Hawks the pro hero, kneeling over a dead body sucking it's blood, he doesn't notice you yet

"Glad this one didn't struggle.." he muttered when he was done sucking the blood