He Knows Too Much: Kleiner thinks it wise for him and Barney to get out of City 17 because the broadcast revealing that Mossman is Breen's mother only aired inside the Citadel because the broadcasting was down due to a system reboot meaning Kleiner and Barney are one of the few people who know the secret.
I'm A Humanitarian: Gordon, who (although under the influence of drugs at the time) ate off Eli's leg...and wang.
Infallible Babble: Played with when Barney mentions that the Vorts are rumoured to be able to preform resurrections and Kleiner argues that it must be true because it's a rumour. It is played with because in an earlier comic This One had already confirmed that they can preform resurrections, it's just Barney and Kleiner had never had it confirmed to them.
Intercontinuity Crossover: When NSFW Comix's Cuthwald was assumed dead he started appearing in City 17. When Cuthwald was revealed to have been alive NSFW Comix had a comic where Manly Man was reading a newspaper dismissing Cuthwald sightings in City 17.
Kissing Under the Influence: Breen and Mossman (who isn't under the influence), actually they do more than kissing, which later becomes Squick when it is later revealed that Mossman was Breen's Mother.
Luke, I Might Be Your Father: Dr. Kleiner might be Alyx's father, however her mother "took rather a lot of lovers".
Mauve Shirt: Sunbeam, an ex-combine elite who is a member of the Free Children's Commune. Turns out to have been The Mole the whole time when he remembers his original mission and aids Breen with massacring the entire commune. Shortly afterwords, he suffers a Karmic Death when Barney runs him over during his escape from White Forest.
Meaningful Name: Earl Beathan, Roderick Thanatos, X. Ben Dibble-Redshirt and Peter Orniphobe.
Beathan derived from Scottish Gaelic beatha meaning "life" and Thanatos being the Greek name for the personification of death. Earl carries around the corpse of Roderick because of the belief that he is still alive.
Not So Harmless: It's easy to not take Dr Breen very seriously at first. However, after he orders the mass slaughter of the Free Children's Commune he quickly reminds everyone exactly WHY he's the Big Bad in the first place.
Of Corpse He's Alive: Earl Beathan does this to Roderick, however considering Roderick is decayed no one is buying it, except Earl who believes Roderick is actually alive.
Right Behind Me: Happens to a citizen who sings a rather... unflattering song about Breen aften he’s eaten by Mr Nibbles, even failing to notice the others running off (including his keyboardist)!
Self-Serving Memory: Retconed in via Word Of God to explain differences between Magnusson's flackback in Book One and Mr. Nosedive's retelling of the same events in Book Four.
To one of the author's other creations, Pingu Parody Party, in the form of a man dressed as Pingu who is being hunted by a man namedHugh Chube for copyright violation.
Trick Bomb: The H-Bomb which will cause every living in the blast radius to become permanently stoned and anyone with 500 kilometres of the epicenter to get serious munchies.