History Literature / OlogySeries

* AlwaysChaoticEvil: Zigzagged with vampires. While the Moloch and Ba'al bloodlines are definitely this trope, the Belial are capable of at least ''trying'' to be peaceful. However, they are still vampires, and are just as capable of killing people and spreading misery as the rest of their kin. The only truly good and noble vampire is the Belial known as the Slayer, who discovered a way to repress her instincts and became a hunter of her own kind.

* AlwaysChaoticEvil: Zigzagged with vampires. While the Moloch and Ba'al bloodlines are definitely this trope, the Belial are capable of at least ''trying'' to be peaceful. However, they are still vampires nonetheless, and are just as capable of killing people and spreading misery as the rest of their kin. The only truly good and noble vampire is the Belial known as the Slayer, who discovered a way to repress her instincts and became a hunter of her own kind.

** More unusual dragons include the highly theoretical South American amphithere subspecies, which may or may not even exist; pseudo-dragons such as [[BasiliskAndCockatrice basilisks and cockatrices]]; the three-headed [[OurHydrasAreDifferent hydras]]; the arboreal, koala-like Tasmanian dragons; and the aquatic, finned and ink-spitting Sargasso dragons (although ''Monsterology'' raises the possibility that the latter is not a true dragon).

* BasiliskAndCockatrice: Both exist as species of pseduodragons, a term used in the books for creatures related or similar to dragons but that aren't classified among them for whatever reason. Basilisks are notable for three things: being incredibly deadly, having some form of shapeshifting ability, and these being the only concrete things anybody known about them, since people tend not to survive encounters with them. Cockatrices are chicken-reptile hybrids with a deadly poisonous breath. ''Dragonology'' depicts them as essentially birdlike wyverns with high, spiked crests and tails that fork into three halfway down their lengths, while ''Monsterology'' shows them as more traditional chicken-like creatures with batlike wings and long, slender reptilian tails.

* KnightOfCerebus: The insidious extraterrestrial parasite S.L.I.M.E. is by far the greatest threat to the universe in ''Alienology'', and the Ology Series in general. It [[PlanetLooters consumes entire worlds and wipes out all life]], and no weapon known to man or alien can stop it. Humans are the only species immune to its effects, and only the most intelligent humans are immune. Even the reptons fear it, as S.L.I.M.E. wiped out their entire planet, forcing the emperor to repopulate his homeworld with clones.

* BeCarefulWhatYouWishFor: Without knowing the full legend, John Oro of ''Mythology'' wished for the [[TooDumbToLive Midas touch.]]

* KnightOfCerebus: The insidious extraterrestrial parasite S.L.I.M.E. is by far the greatest threat to the universe in ''Alienology'', and the Ology Series in general. It [[PlanetLooters consumes entire worlds and wipes out all life]], and no weapon known to man or alien can stop it. Humans are the only species immune to its effects, and only the most intelligent humans are immune. Even the reptons fear it, as S.L.I.M.E. wiped out their entire planet, forcing the emperor to repopulate the empire with clones.

* KnightOfCerebus: The insidious extraterrestrial parasite S.L.I.M.E. is by far the greatest threat to the universe in ''Alienology'', and the Ology Series in general. It [[PlanetLooters consumes entire worlds and wipes out all life]], and no weapon known to man or alien can stop it. Humans are the only species immune to its effects, and only the most intelligent humans are immune. Even the repton clones fear it, as S.L.I.M.E. wiped out the entire planet, forcing the emperor to repopulate the planet with clones.

* KnightOfCerebus: The insidious extraterrestrial parasite S.L.I.M.E. is by far the greatest threat to the universe in ''Alienology'', and the Ology Series in general. It [[PlanetLooters consumes entire worlds and wipes out life]], and no weapon known to man or alien can stop it. Humans are the only species immune to its effects, and only the most intelligent humans are immune.

* KnightOfCerebus: The insidious extraterrestrial parasite S.L.I.M.E. is by far the greatest threat to the universe in ''Alienology'', and the Ology Series in general. It ''[[PlanetLooters consumes entire worlds and wipes out life]], and no weapon known to man or alien can stop it. Humans are the only species immune to its effects, and only the most intelligent humans are immune.

* OurMermaidsAreDifferent: ''Monsterology'' has a pretty traditional take on Merfolk, except that they mean no harm to the people they charm with their song. They simply don't realize that humans are unable to breathe underwater. Conversely, they can't breathe air for long and Ernest drake muses that an "overwater suit" could be designed to allow them to travel on land.

** Yowies are mentioned in ''Monsterology'' but are not actually shown. They are marsupial relatives of yetis and bigfoots with red eyes and and large canine teeth.

* FeatheredSerpent: The Mexican Amphithere in ''Dragonology''. It's thought to be the basis for the deity Quetzalcoatl of Aztec mythology.

* AlwaysABiggerFish: ''Monsterology'''s chapter on aquatic creatures employs this in regard to sea monster food chains. Sea serpents prey on whales, krakens prey on both whales and sea serpents and leviathans happily eat whales, sea serpents and krakens alike.

** More unusual dragons include the highly theoretical South American amphithere subspecies, which may or may not even exist; pseudo-dragons such as [[BasiliskAndCockatrice basilisks and cockatrices]]; the three-headed hydras; the arboreal, koala-like Tasmanian dragons; and the aquatic, finned and ink-spitting Sargasso dragons (although ''Monsterology'' raises the possibility that the latter is not a true dragon).

* DoingInTheWizard: ''Dragonology'' and its spinoffs state that phoenixes don't actually "die and come back to life" as people think, but actually bathe in fire to scorch parasites off of their feathers.