Shrike

The slit of a mouth lengthened into a long smile and the Stalker darted forward, quick as a lizard.
Miss Fang sidestepped, jumped past it and swung a high kick, but it was far too fast for her. “Run!”
she shouted at Hester and Tom. “Get back to the Jenny! I’ll follow!”

12: The Gasbag and Gondola, Mortal Engines, pg 50/152