I saw so many people typing Regina as ESTJ, ENFJ, ESFJ, but no one seems to suggest ENTJ.
I think she is an ENTJ.
Te – Regina is exceptionally sensitive to what works and what does not, as evident in her tactics. To achieve her own goal (which is to maintain her popularity and supremacy in her school), she has many solutions – keeping a close circle of followers, manipulating others using secrets and emotions, intimidating others, mobilising her own sex appeal, etc.. Her desire to provide solutions is so expansive that she is used to solving others’ problems, like getting rid of Jason’s new girl so that Gretchen will be happy. Eventually this desire to be successful leads her to become a ruthless leader who HAS to be the top dog.
Fe – There are analyses that extraverted feeling is the dominating function used by Regina since she is manipulative, but it is inaccurate. Regina’s tactics do resemble some of Fe users’ habits, such as giving compliments, but solely for the purpose of manipulating others. For strong Fe users, compliments are used to make people genuinely like them, since the emotional atmosphere greatly affects themselves.
Ni – Regina is a long-term thinker; her plans never only consist of immediate outcomes. She clearly knows what will be followed by one move, and cleverly utilises the observation to her own advantage. For instance, when she plots revenge on Cady, instead of just venting her own fury towards her frenemy in the Burn Book, she renders the book as a fake evidence of Cady’s wrongdoings. She even stages a riot after school by distributing copies of the Burn Book, and is acutely aware of the consequences, in order to exert pressure on Principal Duvall for punishment.
Si – There are analyses that Regina uses introverted sensing as an auxiliary function. This is very unlikely, since she rarely trusts in literal information stored in her head. For her, written rules are only for the dumb ones, just like the fashion rules among the Plastics. She draws flexible and random information to ameliorate her own methods.
Se – Despite its status as a tertiary function, extraverted sensing is evidently used by Regina. She has strong opinions on what is beautiful and what is not (like other people’s dresses), and reacts instantaneously to present situations when demanded. One instance is when she first meets Cady: she quickly solves her problem with Jason, and quickly evaluates Cady’s worth as a friend. (“And you are so pretty… so, you think you are really pretty?â€) She can be an improviser when she wants to.
Ne – The Cady experience is said by some as a manifestation of extraverted intuition, but it is also unlikely. For Ne users, the fun is in exploring different parallel realities and possibilities, but for Regina, she WANTS a friend so she GETS it. There is only one vision of the future for her.
Fi – The least developed function, introverted feeling is often neglected by Regina. When her emotions indeed influence a lot of her decisions (such as hating Gretchen, being angry with Cady), she is often oblivious to her own feelings, and expresses it in extremely negative ways, such as unfriendliness and revenge. Throughout the movie, she is unaware of how her ways hurt others’ feelings and has essentially no moral standard for her actions. When she learns to express her anger through sports, she is doing better in the Feeling arena.
Ti – For Regina, understanding the mechanism of why one thing works is not important, since what matters is what works for her. Moreover, she perceives the world through the love-hate filter, rather than the logical-illogical filter, which is evident in her criticisms. (“Boo, whore.â€)