As of this chapter, Nina is officially promoted to a main character.
This marks the first time Slasher is seen in his werewolf form.
Trivia
Blooper: In the author's notes, Aly Michalka got mixed up with AJ Michalka.
What Could Have Been: Nina was meant to be a one-time enemy during the "Glandus War" arc who'd just end up in the Conformatorium when it ended. It was her increasing popularity that led to her sticking around.
Word of God: Nina being added to the main cast was a combination of her status as a fan favorite character, the authors enjoying writing her, and her friendship with Skara.
Nina was 9 when she witnessed Tuggers' death and became an atheist. She was 14 by the time she was enrolled into Glandus High.
Silas dropped out of Glandus after losing the rematch against Nina.
Mr. Fierce got eaten by something courtesy of Meteora, which is how she replaced him.
When Glandus "publicly got rid of the Illusion track", Emily was put in the Construction track, which is how she met Cain.
Sunny's sadness is due to Steve being labeled a criminal.
Nina's siblings probably hate their parents right now, and possibly resent Cally for being the favorite child.