I saw Project Hail Mary in theaters, and then recently rewatched it on streaming. I would say that the second viewing was a little slower because I knew what Grace needed to discover, but overall it was still a great movie.
Grace is no Body Type; he has no confidence in his physical abilities. He’s also no Heart Type; he’s unaffected by appeals to the good of humanity. He’s a Head Type, one who’s removed himself from professional society. This is part of what makes his Hero’s Journey compelling. He’s no hero, not even in his own mind.
We’re left with a Five, Six, or Seven.
He eventually comes to see himself as an adventurer, as any Seven would, and he ends up being quite resourceful in a pinch. It’s a stretch, though, to call him a Seven. He’s not excited enough at his possibilities. A Seven would love to go into space.
Because his pre-mission choices are driven by fear, he could be a Six. He enjoys being of service to his students, and is willing to speak honestly to them. His classroom is all the world he needs, and he’s happy that it’s a small, isolated environment.
Ah, there we go. At first, his duty is to his teaching job. Later, his duty is to Rocky. A Six can do anything when they feel a sense of duty. It’s what keeps a Six from becoming mentally paralyzed by worry. Grace is a good example of the possibilities of a Six, from their darkest characteristics to their most glorious. The story of how he finds his bravery is very compelling.