* CrowningMomentOfHeartwarming: In ''A Darkling Plain'', the scenes where Fishcake and Anna find Sathya's hermitage in the mountains, and start acting like a family... Especially the scene where Anna carves a toy horse for Fishcake, and he acts like it's the most beautiful thing he's ever seen. ''Sniff.''
* LesYay: Plenty between Sathya and Anna Fang. Sathya created the Green Storm and [[spoiler:revives Anna Fang]] because of this. Even the [[spoiler: Stalkerized]] Anna goes back to Sathya. Confirmed by General Naga in the last book.
* MagnificentBastard: Thaddeus Valentine.
* TooCoolToLive: Shrike and Anna Fang in the first book. [[spoiler: In fact, Too Cool To Die as they're both resurrected in the sequels.]]
* TheWoobie: Throughout ''Mortal Engines'', Katherine Valentine discovers that the city she calls her home is not as shiny as she thought, that most inhabitants don't consider her as one of them anyway, and that the person she trusted the most is [[spoiler:a liar, a thief and a murderer]]. [[spoiler:Add the death of anyone else whom she ever cared for]] and by the end of the book, she's become a {{Determinator}} to the point it's heartwrenching.
** Tom and Hester also count as one too.
** [[spoiler: Valentine]] might be a JerkassWoobie; he did terrible things, but he wanted to [[spoiler: make a better world for Katherine, and this backfired spectacularly.]]