*Spoilers for up to Book 6*
Riddle: *Becomes an absolute tyrant, punishes his dorm members severely for minor infractions, nearly kills Ace.*
Leona: *Comes up with a plan to injure other students, going as far as breaking their bones, nearly reduces Ruggie and others to sand.*
Azul: *Traps over 200 students in magical contracts, has Jade and Floyd beat up those trying to escape, practically makes them slaves.*
Jamil: *Mind-controls Kalim into abusing Scarabia students with strict regimes, tries to kill Yuu, Grim, Kalim, and the Octavinelle trio.*
Vil: *Upsets Epel to the point he runs away, uses his unique magic to try to kill Neige, almost kills the NRC Tribe.*
Idia: *Kidnapped past Overblot victims to run experiments on and injured them in the process, releases phantom that will destroy humanity.*
Crowley: "Ahaha, well, these things have to happen sometimes, very typical and not-concerning behavior!"
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Ace, Deuce, Yuu, and Grim: *Accidentally break a chandelier*
Crowley: "EXPELLED."