It's often said that Griffith is a wolf in sheep's clothing and Guts is a lamb in wolf's clothing.
But in reality, it's the other way around: Griffith is thought of as a lamb, and Guts as a wolf. Period.
Griffith is a lamb in the noble sense: he believes in the strength of the flock, of a community, and he sacrifices himself several times in the face of predators so that his group can survive.
His fundamental weakness is that he can't stand solitude. It's this visceral need for others, this refusal to be alone, that ultimately breaks him. Tired of being sacrificed himself, he turns the logic of sacrifice against his own flock during the Eclipse. It's not the power of the wolf that drives him to the act, but the fragility of the lamb.
Guts, on the other hand, is a wolf. A survivalist who believes only in individual strength, convinced that to be attached is to risk losing. That's why he leaves the Falcon Troop: to seek his own greatness, his own dream.
But it's along the way that he discovers his true wolf instinct, in its noblest sense: he survives better in a pack than alone, he's stronger when he protects than when he isolates himself.
Griffith, who has become a superpowered being, will remain a prisoner of the wolf's solitude, which he cannot endure. His desire will always be to become the head of a herd again - this time on a human scale.
he has become a predator but with a prey instinct
