The Myers-Briggs Personality Types of the Sirens Characters

I just binged Sirens, the latest Netflix gem starring Julianne Moore, Meghann Fahy, and Milly Alcock, and I’ve got to say: this show is an interesting, hilarious, and sometimes uncomfortable look at messy human behavior and character dynamics. It’s like Succession and Greek mythology had a baby.

Set on an exclusive island estate over one long, hot Labor Day weekend, Sirens spins a darkly comedic tale of class, power, and the ways we’ll twist ourselves into knots to belong. At the center of it all are the DeWitt sisters, Devon and Simone, caught up in Michaela Kell’s world of luxury, manipulation, and…raptor preservation.

Discover the Myers-Briggs (MBTI) personality types of the Sirens characters.

As a Myers-Briggs® practitioner, I couldn’t help but clock the types swirling in this simmering pot of drama. Let’s start with the one at the center of it all: Simone DeWitt.

The Myers-Briggs® Personality Types of the Sirens Characters

Simone DeWitt: ESTJ

Simone’s the one you’d want running your start-up or organizing your wedding—or, in this case, managing the daily chaos of an island mansion that’s practically a character itself. She’s an ESTJ, and you can see it in every decisive flick of her eyes.

ESTJs are the organizers of the world—pragmatic, structured, and competitive. Simone’s no exception. She’s detail-oriented and whip-smart, quick to take charge when things get messy. From the first moment she steps onto the scene as Michaela Kell’s live-in assistant, she’s the one making sure everything’s running smoothly (or at least looks like it’s running smoothly).

But here’s where things get interesting—and real. While Simone’s busy playing the part of the perfect assistant, she’s also hustling hard to outrun the ghosts of her past. ESTJs, for all their practical prowess, can be pretty ruthless about ignoring feelings they deem “unproductive.” Simone’s inferior Fi (Introverted Feeling) is peeking out in all the ways she’d rather not acknowledge. She’s polished and precise, but there’s a vulnerable undercurrent she keeps locked up tighter than the Cliff House wine cellar.

It’s a classic ESTJ move: keep the world in order, even if it means neglecting your own emotional mess.

If you’ve ever worked with an ESTJ, you know exactly what I mean. They’re the ones who always seem to have a plan (and a backup plan) but might need a little coaxing to actually talk about what’s going on inside.

Michaela “Kiki” Kell: INFJ

Let’s talk about Michaela, the island’s queen and a vision in Lilly Pulitzer, played with otherworldly grace by Julianne Moore. She’s ethereal and mysterious, a woman who can walk into a room and instantly become the sun everyone else orbits around.

INFJs have a knack for creating an atmosphere. They’re intuitive and deeply attuned to the emotional landscape around them. Michaela’s philanthropy and activism are more than social posturing—they’re the visible signs of her profound conviction that she’s here to make the world a better place.

But INFJs can also get swept up in their own visions. Michaela seems to know everyone’s secret dreams and fears—often before they do. There’s a mystical quality to the way she draws people in, and the show isn’t really clear whether she actually does or doesn’t have supernatural powers. What I can say is that INFJs can sense undercurrents, spot the cracks in someone’s mask, and use that insight to either heal or manipulate. Michaela does a little of both.

Michaela’s relationship with Simone teeters between mentorship and control, care and obsession. She’s got the empathic quality of the INFJ blended with the unhealthy INFJ’s need for control and perfection. Everything must align with her vision, but she can also manipulate and pretend in order to create that vision as well.

While Michaela has depth, insight, and a mysterious aura thanks to her dominant Introverted Intuition, she also loves the luxury and power that her position gives her. Types with inferior Extraverted Sensing (INFJs and INTJs) tend to be very affected by beautiful sights, textures, and decadence, even if they don’t admit it or feel like it’s “shallow.”

I loved that Michael showcased some of the light and dark sides of the INFJ. The empathy, the insight, and the passion to improve the world combined with some manipulation, selfishness, and need for control as well.

Devon DeWitt: ESFP

Devon DeWitt is an ESFP character from Sirens

And then there’s Devon. She’s the kind of character who feels like a punch to the gut and a warm hug all at once—a messy, real human with an ESFP soul.

ESFPs are all about keeping it real. They’re charismatic, down-to-earth, adaptable, and always ready to chase a good time. But Devon’s the cautionary tale of what happens when that boundless energy has nowhere healthy to land. She’s stuck in Buffalo, taking care of her father, and trying to outrun her own demons with every cigarette she lights and every sarcastic one-liner she tosses out.

The ESFP’s dominant function, Se (Extraverted Sensing), is all about the here and now, and Devon lives there… a little too hard. She’s reactive and impulsive and overwhelmed by responsibility.

ESFPs don’t want to be stuck. They want to feel free. They want adventure, exploration, excitement, and meaning. But Devon is stuck in a life that feels like a trap. Every day she takes care of her alcoholic father; a man who is riddled by Alzheimer’s and frequently forgets who she even is. On top of that, she never finished college, she works at a job she hates, and she can’t seem to see how amazing she actually is. It’s a nightmare for an ESFP. But she keeps serving because her heart tells her it’s the right thing to do.

Devon’s devotion to her sister Simone is raw and unyielding, even when it hurts. That’s the ESFP’s auxiliary Fi (Introverted Feeling) talking: deeply personal values, a moral compass that’s felt in the gut, not the head.

As an ESFP, Devon also has no patience for the pretense and formality of the Kell social elite. She says it how it is at whatever volume she pleases. This makes her a thorn in Simone’s side because Simone has longed to belong in this elite group, to feel “special,” provided for, and safe for so long. But Devon can’t pretend, she can’t act like what’s happening is normal, she sees strange or inconsistent behavior and feels compelled to call it out. But she does it because she genuinely cares…sometimes too much.

Devon is the messy hero of this story, the person who’ll risk everything for the people she loves—even if it means breaking her own heart a thousand times in the process.

Peter Kell: ISTP

Peter Kells is an ISTP character in Sirens

Peter Kell isn’t your typical socialite husband. Sure, he’s got the money, the influence, and the ability to fill a room with that effortless old-money charisma. But he’s also an ISTP—private, practical, and always a little bit apart from the crowd.

ISTPs are the original quiet rebels. They’re independent and resourceful, always in search of a challenge worth their time. And Peter? He’s made a life out of being a man who’s hard to pin down. While Michaela’s busy saving raptors and managing relationships, Peter’s out fishing or Quahogging, sleeves rolled up and content to work with his hands. He’s the sort who’d rather be out on the water with the sun on his face than making polite conversation with island royalty.

There’s a calm to him that’s unmistakable—the easygoing patience of someone who’s learned to trust his own instincts. And that’s the ISTP’s bread and butter: pragmatic and adaptable, with a tendency to keep their thoughts close and their cards even closer.

But he’s not just a laid-back observer. Peter’s got a wry, almost mischievous side that breaks the tension in any room. Michaela may have outlawed carbs in her kingdom of green juices and microgreens, but Peter had everyone smuggling in loaves like it was Prohibition-era gin. That’s the ISTP’s Se (Extraverted Sensing) at play—living in the moment, poking at the rules just enough to keep things interesting.

Another thing I love about Peter is that he shows us how ISTPs become more emotionally cognizant as they age. Most ISTPs keep their emotions locked down, but Peter’s been around long enough to know that feelings matter—even if he’d rather not talk about them. You see it in his quiet devotion to his family, in the way he worries about the distance growing between him and his kids, in the way he easily navigates social situations at his mansion.

In my years working with personality types, I’ve seen how ISTPs come into their own as they age—less caught up in the chase, more tuned in to what actually matters. Peter’s the perfect example: an older ISTP who’s found his sweet spot between independence and connection, adventure and home. That said…there are still some murky secrets that seem to loom at the end of Sirens and he may not truly be all that he seems…but you’ll have to watch it to find out.

Jose: ISFJ

Jose is the island’s quiet constant, the guy who knows every inch of the estate and everyone’s business—without ever making it about himself. He’s the quintessential ISFJ: humble, hardworking, and absolutely rock solid.

ISFJs are the quiet caretakers of the world. They might not grab the spotlight, but they’re the glue holding everything together. Jose’s been Peter’s right-hand man for decades, a steady presence who sees everything but never lets it slip. That’s classic ISFJ territory: vigilant and observant, but always with a warm, approachable edge.

He’s also the confidante—the one the staff gossips with, the one who knows where all the bodies (metaphorically speaking) are buried. ISFJs have an uncanny knack for making people feel seen and safe. Jose might be managing security, but he’s also managing egos, keeping the peace in a world that’s one spilled martini away from imploding.

Ethan Corbin III: ExTP (Could Be ESTP or ENTP, But Let’s Talk About That)

Ethan Corbin III is the social butterfly of the show, always ready with a quip or a cocktail, and just as ready to vanish when things get too real.

I’ll be honest: I’m still debating whether Ethan’s an ESTP or an ENTP. Unfortunately, I don’t think enough details were given in the show for me to truly say which type fits him best.

Either way, Ethan’s an ExTP at heart—quick-witted, endlessly curious, and always sniffing out the next opportunity to dive in or run away. In Sirens, he’s the guy who owns a yacht captain (and a blazer embroidered with duckies—because of course he does).

Ethan is a master of banter, but he’s also someone who wants to feel things with his whole body (and probably yours, if we’re being honest). He seems charming, curious, fun-loving, but also manipulative and shallow.

In Sirens, we see Ethan stumble a bit. He’s used to playing the field, but Simone’s gotten under his skin. For the first time, the game isn’t enough. He’s forced to wonder what it would be like to actually stop running, to let someone in past the jokes and the party tricks.

I’m inclined to think that Ethan is an unhealthy ESTP because he seems very focused on the sensory indulgences of life. However, another part of me also doubts it because I feel like an ESTP would want to pilot their own boat rather than hiring someone else to do it (at least every ESTP I know would want to). I also cannot for the life of me imagine an ESTP wearing a blazer with duckies on it. But that could just be my own personal experiences with ESTP and be completely unfounded in accuracy. The truth is, we really just don’t get enough details about Ethan to truly know his type (yet).