The Hulk Saves Darcy (and a Mini Captain America) from a Halloween of Horrors (смешанная)

Darcy tried to control the urge to yell and slid further down on the floor. "You can assist me," she shout-whispered, cupping her hand by her mouth near the receiver, "by getting someone, preferably someone with superpowers, down to the lobby stat because something is about to go..."
She trailed off as she saw a shadow appear on the nearest wall. The cackle this time was loud and close, causing a rush of goosebumps to trail down her arms.
"Miss Lewis?" 
Rising from her hiding place, phone still by her ear, Darcy whispered, "Send someone. Anyone!" Then she ended the call and turned, coming face-to-face with a figure that would have terrified her as a child.
AKA - Prequel #3 to Her Big, Green, Guardian Angel - This story tells of the third time Darcy meets the Hulk. Part of a series, but can be read as a standalone.