The 378 tritype — nicknamed The Mover and Shaker — is what happens when a success-driven heart, a restless mind, and a commanding gut all sit in the same person. The concept comes from Katherine Fauvre's tritype model, which layers a dominant type from each of the Enneagram's three centers — gut, heart, and head — into one composite pattern instead of a single number. A 378 doesn't just want to win; they want to win visibly, keep three other opportunities warming up on the side, and take direct control the second the pace of progress isn't fast enough.
What is the 378 tritype?
The 378 tritype pairs a Type 3 heart core (the Achiever's drive to succeed and be seen succeeding) with a Type 7 head fixation (the Enthusiast's need for options, speed, and stimulation) and a Type 8 gut fixation (the Challenger's need for control). The result is a relentless, magnetic go-getter who sets ambitious goals, chases them through constant reinvention rather than a single fixed path, and takes charge outright the moment progress stalls or someone else's indecision gets in the way.
How the three fixations combine
None of the three fixations sits there quietly — they lean on each other, and under pressure they cover for each other's soft spots. Here's what each position actually contributes to the stack.
1st — Type 3, The Achiever (the anchor)
First position means Type 3 sets the scoreboard for everything else. There's a constant read on what 'winning' looks like in whatever room the 378 is standing in, and a real talent for reshaping their presentation to match it — the pitch, the outfit, the résumé line, the tone. In a 378 this isn't quiet striving; it's fast, visible, competitive momentum. Slowing down long enough to look unproductive feels almost dangerous, and the fear underneath the polish is being exposed as ordinary.
2nd — Type 7, The Enthusiast (the accelerant)
Second position is where the Achiever's ambition gets its restlessness. Type 7 refuses to let any single goal become the only goal — instead of grinding on one win until it's finished, a 378 is already scoping the next venture, the next role, the next city. It's ambition with a built-in escape hatch: they'll commit fully to the current project, but they need a backup plan glowing on the horizon, and having zero other options registers as a trap.
3rd — Type 8, The Challenger (the backbone)
Third position runs quiet until progress stalls. Type 8 is the backbone that activates the moment a 378 senses drift, incompetence, or someone standing between them and the goal — the charm and the momentum both drop instantly, replaced by blunt, unapologetic authority. It rarely lingers as a mood; it removes the obstacle, reasserts control, and then the 3 and 7 come right back online. People who know a 378 only as polished and upbeat are often startled the first time they meet this part.
Put together, the three fixations run one loop: the 3 sets an ambitious, visible goal to prove its worth; the 7 keeps that ambition from turning into tunnel vision by lining up the next opportunity before the current one even lands, so no single outcome ever gets to feel like the only shot; and the 8 stands guard underneath both, silent until momentum stalls, a plan gets threatened, or someone tries to slow the pace down. When that line gets crossed, charm and forward motion disappear and blunt, decisive force takes their place. Once the obstacle is cleared, the loop resets and the 3's polished drive comes right back online — often within the same conversation.
How 378 sounds in real life
The stack stays theoretical until you watch it move through an actual conversation. Here's what the 3-7-8 loop tends to sound like once it hits a keyboard.
“Signed. Already booked two calls for next week on the bigger thing — no point sitting on a win, let's keep the wheel turning”
“Honestly I'm not fully committed to this path yet, I've got two other offers I'm weighing — I like to know what else is out there before I lock in”
“We've talked about this for two weeks. I'm done waiting — I'll just make the call myself and you can catch up”
The six 378 orderings
Because a tritype names three dominant types without pinning down which one leads, 378 actually describes a family of six possible orderings. 378 and 387 lead with Type 3, so polish and visible ambition are the first thing you notice, with either restlessness (7) or control (8) surfacing second. 738 and 783 lead with Type 7, so options and forward motion come first, backed by either image (3) or gut authority (8). 837 and 873 lead with Type 8, producing a much blunter, more visibly commanding Mover and Shaker, where success-seeking or restlessness trail behind an upfront need for control. Same three ingredients, different order of operations — and a genuinely different first impression, from 'instantly impressive' to 'instantly in charge.'
Strengths & blind spots
Relentless momentum
Turns ambition into action faster than almost any other combination, and rarely runs out of runway.
Adaptable under pressure
Reads the room, reshapes the pitch, and finds a way to win even when the plan changes mid-stream.
Decisive when it counts
The 8 underneath means indecision anywhere else in the room gets absorbed and resolved fast.
Struggles to sit still in success
Rarely stays long enough in a win to actually enjoy it before scanning for the next one.
Image can crowd out honesty
The pull to look like the winner sometimes outruns the harder, slower truth of the situation.
Control arrives as a takeover
When the 8 shows up, it can feel to others like being steamrolled rather than led.
Go deeper on each core type
The 378 stack is easiest to understand once you've sat with each fixation on its own terms. Start with Type 3, The Achiever, the heart fixation that ties self-worth to visible success. Then read Type 7, The Enthusiast, the head fixation that keeps every option open and every day interesting. Finish with Type 8, The Challenger, the gut fixation that takes charge the moment momentum stalls or someone tries to slow things down.