I own nothing so please don't sue because I'm broke because of Comic-con! All the characters belong to DC [the on and only].
Nightwing began to worry as the Joker began to overcome Batman. Sawing rapidly on the splinter Dick desperately strained to free himself. Cursing as the point pierced his gauntlet [more than once], he tugged at his bonds which finally gave way and he tumbled out of the ceiling. Shooting a line from his gauntlet Dick soared throng the air and his foot made contact with the Joker's face.
Staggering backwards the Joker swore. "Dickie Bird, why can't you just die for once?" the Joker reconsidered, "But then we'd have no fun!" The Joker grinned his false smile and revealed a wicked-looking crowbar. The Jokers choice-crowbar, Nightwings choice escrima sticks. Dick smirked, drawing his escrima sticks, blue sparks, fizzing at the tips.
The Joker raised his eyebrows and cackled, laughing so hard he doubled over. A swirling blue-black mass materialised out of the darkness behind him and the Joker suddenly broke off mid-laugh, "Now Dickie, don't try to be Batman, look where that got Brucie!" He gestured towards where Batman had fallen. The Joker hadn't a scratch on him and gangway was empty except for a crimson puddle of blood. Batblood.