Clue MBTI: The Feeling Functions


Mrs. Peacock: Extraverted Feeling (Fe)

Mrs. Peacock is determined that everyone have a good time, despite the mysterious circumstances of their invitations, and breaks the ice with dinner conversation to cut through the silent awkwardness. She’s a great hostess, a skill she used to throw parties that kept her husband socially connected with the right people. She depends on appearing socially respectable, expressing disgust at Green and Plum’s alleged sexual deviancy while denying her own crimes. She’s loud and expressive with her feelings, and constantly blurts out things she shouldn’t without thinking. When the Evangelist comes to the house, Peacock rushes to hurry him away, for fear that he will become another victim in the rash of murders.

Best Suggestion: ESFJ


Mrs. White: Introverted Feeling (Fi)

Mrs. White is seething with rage from within—flames on the sides of her head!–but you’d never know it to look at her cool, icy exterior. She’s vain and self-absorbed and believes men should be as disposable as Kleenex, tossed away when she’s done with them. She feels no remorse after the death of her husband, just happiness at having her own life back. She recognizes Yvette as the woman who cheated with her husband, but denies she was jealous. In fact, she hated Yvette and waits for the right opportunity to strangle the life out of her.

Best Suggestion: ISFP


ESTJ: The Founder, “Star Trek: Deep Space Nine”


ESTJ – the Director, the Achiever, the Optimizer

When we type a villain, we usually expect their inferior function to be their fatal weakness. For Te-doms, the stereotype is that they have no moral oversight to their actions. By contrast, the intimidating Founder has a very clear moral vision–she believes she is absolutely entitled to wield control over other, lesser species.

Another of DS9’s ESTJ villains, the meddling Brunt, acts the same way. He enforces the laws of Ferengi society with an aggressive sense of justice. Just like a weak inferior-Te user might use faulty logic to defend their subjective beliefs, inferior-Fi can provide the comfort of self-righteousness to an over-controlling ExTJ.

(This character was never given a name on the show. Instead, she was referred to in dialogue and in the credits as simply, “Female Changeling.” That’s super clunky and annoying to type over and over, so for simplicity’s sake, I’m just calling her “The Founder.”)

Dominant Function: (Te) Extraverted Thinking, “The Workshop”


The Founder’s major directive is to bring every civilization she meets under the control of the Dominion. She sees it as her calling to bring order to a galaxy racked with chaos. Solids, she believes, don’t know enough to govern themselves, and so the Founders must lead.

The Founders exert control over their realm through their minions, the loyal Vorta and Jem’Hadar. Both races are genetically engineered to be obedient without question, and to view the Founders as gods. For further control, the Jem’Hadar are engineered to be addicted to a drug called Ketracel-white, which only their “gods” provide. Continue reading

ISTJ: Michael Eddington, “Star Trek: Deep Space Nine”


ISTJ – the Inspector, the Sentinel, the Expert

Eddington undergoes a major character switch when he becomes a villain. After a couple of years serving quietly in the background, he jumps ship (or station, as it were), and goes rogue. He’s more aggressive and dramatic as a crusading Maquis than he was as a law-abiding Starfleet officer, leading me to believe he’s operating out of his lower functions when he makes the change. Eddington sees himself as the hero of his own story, but to Starfleet and Sisko, he’s a terrorist.

Dominant Function: (Si) Introverted Sensing, “The Study”


At first, Eddington seems like a good old-fashioned, reliable Starfleet officer. He joined with the ambition of being a captain, like everyone else, but ended up in security. That department doesn’t typically lead to command, but he still stuck to his job and did it well. Sisko asks him why he doesn’t just transfer over to the command division, but Eddington doesn’t seem interested in a big change at this point.

Of course, that could just be because he has other things brewing.

Eddington eventually reveals himself as a leader in the Maquis, a terrorist group dedicated to protecting Federation colonists left behind in Cardassian territory after new borders are drawn. The Maquis, and Eddington, don’t believe they should have to leave their homes for any reason. Though they’re offered many alternatives, they hold their ground and refuse to leave no matter how poor their living conditions grow.

Eddington appreciates the real, hand-grown, fresh food he raises and eats as a Maquis. He doesn’t like the taste of replicated food, and recognizes the exact menu selection he’s given as a prisoner. His whole existence as a Maquis feels more natural to him than his outward presentation as a Starfleet officer. Continue reading

INFP: Keiko Ishikawa-O’Brien, “Star Trek: TNG/Deep Space Nine”


INFP – the Healer, the Dreamer, the Clarifier

Keiko O’Brien put up with a lot, and never really got her due. She joined the crew way back in TNG, then left her career to cross over with her husband Miles to DS9, highlighting the show’s themes of family life and diversity. Once the focus shifted to the O’Brien-Bashir bromance (which, to be clear, I think is wonderful), our intrepid botanist went neglected.

Most of her episodes catch Keiko on her bad days, bickering with her husband or worrying what to do with her life. It was tough deciding whether she was always in the grip, or just aggressively using her higher functions. When we see her on good days, she’s obviously smart, sweet, and crazy in love with an Irish engineer who’s as stubborn as she is.

Dominant Function: (Fi) Introverted Feeling, “The Deep Well”


Keiko and Miles love each other deeply in a way that’s obvious to everyone, but also a little inexplicable given how often they seem to be at odds. They clash in the hard-headed way of two Fi-users exasperated with constant compromise. His Fi is lower, so he has trouble working out how to emotionally respond, while her higher Fi wants to be understood without having to explain itself (as an INFP who has dated two ISTJs, I can assure you this never happens in real life…ahem). Continue reading

ISTJ: Martok, “Star Trek: Deep Space Nine”


ISTJ – the Inspector, the Sentinel, the Expert

When typing the Vulcans of The Original Series, I observed that most of them are ISTJs. The orderliness, logic, and composure commonly associated with the type just suits them. Turns out our two favorite Klingons are also Si-doms, and Worf and Martok find ways to tear apart their types’ expectations with a fury.

Dominant Function: (Si) Introverted Sensing, “The Study”


Martok has worked long and hard to get where he is. He comes from a lower-class, “commoner” background, and never forgets it. He was the first in his family to apply for officer training, but he was rejected thanks to a negative vote from the legendary Kor, who believed that those without noble blood should not be allowed in the ranks of officers. Martok holds this against Kor for the rest of his life, and refuses to speak to the man when he joins his crew for one last mission.

Martok had to work as a common day laborer due to his rejection, but he never gave up his original plan to become an officer. He served as an orderly on a Klingon warship and finally earned a field commission from his General when they fought invading Romulans. Sadly, Martok’s father had died by the time he accomplished this, and Martok carried that sore spot with him as well, nursing his grudge against Kor. Continue reading

ENTJ: Kasidy Yates, “Star Trek: Deep Space Nine”


ENTJ – the Commander, the Field-Marshall, the Trailblazer

With the introduction of Kasidy Yates, yet another Extraverted Judger type entered Ben Sisko’s Fi-dom life, challenging his comfort zone. Kasidy and Ben are my favorite couple in all of Star Trek, and it’s frankly impressive and encouraging that these two disparate personality types make such a great pair. They confound each other at every turn, and yet every scene they play together strikes sparks. They seem to enjoy the mystery that is the person they love.

Dominant Function: (Te) Extraverted Thinking, “The Workshop”


Kasidy is captain of her own ship, the Xhosa, which she runs under the company she founded—Kasidy Yates Interstellar Freights, the rhymingest name for a business in all of Star Trek. Since humans live without money in this future, one must assume she’s doing the job for the joy of the work, or that she turns a profit on the side for use outside the Federation’s moneyless economy. Either way, she gets up at 5am every day, and often works till 1am.

She lives by her father’s motto: “If you’re going to do something, do it right.” This even applies to jobs she’s not that interested in, but feels a duty to complete, like her work as convoy liaison officer for one of the Defiant’s escort missions. She gets the job due to her work record and her high standing among the other freighter captains.

Kasidy is willing to take charge in critical situations. She smuggles supplies to the impoverished Maquis, and when she’s caught, she takes responsibility and lets her crew go, facing the consequences on her own. When Ben gets too worked up over the Niners’ baseball game, she pulls the team together and gets them into fighting shape. Continue reading

ENTJ: Zek, “Star Trek: Deep Space Nine”


ENTJ – the Commander, the Field-Marshall, the Trailblazer

Zek almost starts out as a villain, a caricature of big business and greed run amuck. Eventually, he develops a bent toward social justice (which kind of makes him even more of a villain from Quark’s perspective). This new conscience isn’t simply the development of his Feeling function, though. As long as he’s convinced that the emancipation of women and the establishment of social welfare and environmental protections increase the prosperity of the Ferengi people, then in Zek’s judgment, it’s the smart—and profitable—thing to do.

Dominant Function: (Te) Extraverted Thinking, “The Workshop”


Grand Nagus Zek stands at the top of the Ferengi food chain. No one matches his business acumen, and much of his job is to set an aspirational standard of greed and success to live by. Zek doesn’t see a difference between business and pleasure, and in fact the first time he announces his retirement (which turns out to be a dodge), it’s after 85 years of never taking a vacation.

Zek always works to make the best deal for himself. Nothing comes without a measurable cost. Kira and Sisko are able to convince him to make a charitable donation to Bajor in return for Bajor’s good favor in the future, but when he acquires a lost Bajoran orb, Zek intends to make the Bajoran people pay through the nose to get it back.

By law, he should have Ishka thrown in prison for daring to make profit as a female, but she’s so good at it that Zek must admit to her worthiness as a Ferengi. Continue reading