Axel Mortmain and Nate Gray with some automatons. From The Infernal Devices by Cassandra Clare.
Tessa whirled to look at her brother, but Nate seemed to have forgotten she was there—that anyone else was there. He was staring past her at Mortmain, the oddest expression—a mix of fear and worship—stamped on his face. He moved forward, pushing past Tessa; she reached to hold him back, but he shook off her reaching hand with a flick of annoyance. At last he was standing directly in front of Mortmain.
Agatha and an Automaton from The Infernal Devices by Cassandra Clare
One bloodstained hand gripped Agatha’s wrist; clamped in the other was a long, thin knife. Tessa moved forward, but it was already too late. The creature swung the blade with blinding speed, and buried it in Agatha’s chest. Agatha choked, her hands going to the blade. The creature stood, ragged and terrifying and unmoving as she clawed at the knife hilt; then, with appalling swiftness, it yanked the blade back, letting her crumple to the ground. Nor did the automaton remain to watch her fall, but turned and walked back out the door through which it had come.
Shadowhunters attacking the Pandemonium Club. From The Infernal Devices by Cassandra Clare
"At that moment the sound of shattering glass filled the room. The French windows burst inward, and the room was suddenly flooded with Shadowhunters in their dark fighting gear. They were driving before them in a screaming, ragged group the vampires who had fled into the garden. As Tessa stared, more Shadowhunters began flooding in from the other doors as well, herding more vampires in front of them, like dogs herding sheep into a pen. De Quincey staggered before the other vampires, his pale face smeared with black ash, his teeth bared. Tessa saw Henry among the Nephilim, easily recognizable by his ginger hair. Charlotte was there too, dressed like a man all in dark fighting gear, like the women pictured in Tessa’s Shadowhunter book. She looked small and determined and surprisingly fierce. And then there was Jem. His gear made him appear all the more startlingly pale, and the black Marks on his skin stood out like ink on paper. In the crowd she recognized Gabriel Lightwood; his father, Benedict; slim black-haired Mrs. Highsmith; and behind them all strode Magnus, blue sparks flying from his hands as he gestured."