During Vargas Camp Leona educates his group on the history of the mine and, later, on how to find magestones, both the method taught in textbooks and a more effective method of identifying layers of rock that show volcanic activity.
Deuce: “We’ve been in here three hours and couldn’t find a single stone, but he found one in five minutes flat!”
He also educates his club members on how lanternblossoms work and where to find them.
When Epel, Grim and the prefect spill a potion that it took them “hours of trial and error” to get right just once under Rook’s tutelage (Epel: “Rook happens to be a potionology expert”), Leona recreates the potion within a few minutes while being insulted by Grim (“It seems kinda impossible for a putz who’s already gotten held back a year”) and lectured by Epel about why he should give up.
During Spectral Soiree it is only Leona who recognizes instantly that they have been transported to the Spectral Realm, educating his group on ghost possession.
It is also during Spectral Soiree that Leona lectures Ace on the importance of perspective, telling him about “a lawless place” back in his home country where not even the king held any authority, that has since been transformed into a tourist attraction.
Leona explains, “It just depends on how you choose to look at a thing…You need accurate facts, not rumors and assumptions.”
During the event Leona also teaches his group about the use of mirrors as magical artifacts, warning them that the mirror fragments they are collecting for an unknown antagonist could be dangerous:
“There’s the school’s Dark Mirror, the Hall of Mirrors, the Viewglasses. The list goes on. In most of those cases, the mirror connects two places together.” The fragments are revealed to be parts of a disco ball and Floyd accuses Leona of “crying wolf,” but Leona is proven to be correct: Malleus has the students look at the disco ball in order to return them to NRC.
Leona also teaches Jack, Grim and the prefect about how “all magic’s got a loophole,” accurately identifying Azul’s claim that his contracts are unbreakable as a lie despite how he wasn’t in the room at the time.
Leona also knows to be cautious of Jade: when Jade offers him a lemonade during Spectral Soiree, Leona engages in a conversation about Floyd, but then abruptly shuts down Jade’s further efforts to “get to know (him) better,” saying, “I don’t wanna owe anyone from Octavinelle anything. So I gave you a conversation in return for the drink you brought me.” (Jade: “Fascinating. You’re quite socially conscientious. I’ve learned something new today.”)
When Vil scolds Leona for failing to take his application for his 4th-year internship seriously, Leona reveals he has actually already applied to a mining and energy business. Leona claims that interning in his own country just means he won’t need to be useful (“There’s no way an organization in my country would call their own prince incompetent, right?”), but Trey explains, “For all that Leona said, Only a small fraction of students with really high grades qualify to apply for that mining and energy internship.”
Out of the group of Riddle, Azul, Jamil and Vil, Leona was the only person familiar with the Charon: he is the only character to surrender voluntarily without attempting to put up a fight.
Malleus later observes, “Kingscholar is from an old royal house. It would stand to reason he’s heard of them.”
Leona educates the other characters on who the Charon are, what they do, why they are called Ferrymen, and even shares surface-level knowledge of the secretive agency that is STYX.
Leona also already knew of Idia’s family, and while Azul suggests that “Idia could put in a good word” to get them released Leona is skeptical, and later proven correct.
Twisted Wonderland Reference Note 