Even A Rich Unscrupulous Jerk Has Standards: He was clearly horrified when the Creeper suggested him to start a war in Animalia. Initially subverted in that the Creeper still convince him to do so, then double-subverted when he gives up about it and violently rejects the Creeper for making him such an awful suggestion.
Yank the Dog's Chain: on occasion, he does get to take over as the king... for a very, very, very short time.
subverted in the finale, where at some point, he does get to be king thanks to the Creeper's help, but ends up realizing he has been manipulated by him and caused the Core to be damaged. This causes him a My God, What Have I Done? moment, and he gives up the power to Alex and Zoey willingly, deciding they are better fitted than him to own it.
Manipulative Bitch: she became this when Livingstone's intelligence was accidentally transfered to her. The result was so scary Tyrannicus choosed to miss the opportunity to take Livingstone's place as a king rather than let Allegra stay that way.
Big Bad: of season 2. He is notably the only actual villain in the series.
The Caligula: he used to be the king of Animalia before Livingstone takes over. You can guess how he was.
Knight of Cerebus: While he does have some silly moments, most of his appearances made the episodes darker than usual, and he was much more of a real threat than Tyrannicus. He almost caused a war in Animalia (which had never happened before), successfully corrupted the Heart, and in the finale even successfully took power in Animalia for a short amont of time.
Manipulative Bastard: And how. Almost all his plans involve manipulating others . He even once faked remorse just so he could backstab the heroes better.