As I said in my review of the protagonist in The Accountant, any Enneagram choice must be about the character beyond their neurodiversity. Showrunners just can’t present a hero with no specific defining traits.
What are the possibilities for Forrest?
He’s a “running fool”. My first thought is about a Body Type. Someone who needs that physical expression — running across the country — could be a Nine, Eight, or One. However, he doesn’t seem like a Nine. “Sorry I ruined your Black Panther party” is not spoken by someone who avoids conflict. He’ll mix it up with anyone if he thinks he’s defending Jenny. Is he an Eight?
Yes. Think of his bravery during the war. He goes back for everyone, tirelessly. That leadership, that instinctual heroism, is Eight-like.
He’s so connected to his friends — Bubba, Lt. Dan — that I thought he might be a Heart Type. I prefer to think of him as an Eight moving toward his strength number, Two. Perhaps his mental challenge lets him discard the darker side of his Enneagram. He’s never stingy, which would be his weak number (Five) reaction. He’s always compassionate and generous. I really like the idea that Forrest leans heavily into the Two aspect of his Enneagram.
But he’s still an Eight. I only need remember his table tennis prowess to feel certain of that.