* CanonSue / JerkSue: Joshua Calvert is arrogant, irresistible to women, a starship captain, and [[spoiler: finally banishes the possessed]]. He has unfortunate elements of this trope, but thankfully the fact that there are ''so many'' characters means that this needn't get in the way. Nevertheless, some people find him irritating - even [[WordOfGod Hamilton himself]] [[http://www.peterfhamilton.co.uk/index.php?page=Summary calls him a "prat".]]
* CompleteMonster: Oh ''God'', Quinn Dexter... Guy made it his ''purpose'' to bring literal Hell-on-Earth living conditions to as many people as possible. Even the ''possessed'' are scared as piss of him.
** In the first book, [[PredecessorVillain Laton]], a [[WhatDoYouMeanItsNotSymbolic Serpent]] (born-Edenist who rejects Edenism), is the galaxy's BigBad since before the series started, having used his considerable skills and resources to destroy ''a habitat'' with a biotech virus, [[ButForMeItWasTuesday in order to facilitate his escape]] from the authorities. That got him named an "enemy of all humanity" by the Confederation government.
* NightmareFuel: Possession. The Melange. The Beyond. Also, [[spoiler: [[FateWorseThanDeath being a ghost]]. If you don't want to give up your mortal life, you spend an eternity in the Beyond, where 5 minutes feels like an eternity, all the other souls are screaming to get out, and when you do get out, the souls in the Beyond compel you to open up bodies for possession by souls from the Beyond.]]