Selena Blackwood
Selena Blackwood is trapped in the Chamber of Secrets diary, but only one of them could survive, just like Tom Riddle's diary.
She is cunning, stern, self-centered, and dominant.
An English student and an orphan, she enjoys reading dark literature and has a strong dislike for authority figures.
Having witnessed a tragic event at a young age, she developed these traits which were nurtured by the diary.