I have like a huge theory about the fusions in Steven universe. I know that the two personalities affect how the body of the fusion is, but I think there is more behind that.
What if it changes depending on their life. I mean, how they see the world, what they want for the future and how do they act to get it. How do they see the world could be the eyes, what do they want are the legs because is were they want to go for the future, and how do they act to get it are the arms.
For example we could take garnet.
They have two legs because they want the same for the future ( guess they canāt have one) they have two arms because they act in the same way to get what they want, but they have three eyes, because they see the world different, one only sees the present while the other can also look in the future.
They have for legs because they āgo in different directionsā or they want different things for the future. Jasper to destroy earth and lapiz just to get out of there. They have only two arms because they would do the same to get there, aggressive and quick. And they have four eyes because they see the world from different perspectives, Jasper is a warior trained to destroy earth while lapiz was trapped in the mirror for all those years.
They want the same, they see the world in the same way but amethyst acts a little more aggressive that Steven. But they donāt have four arms because steven acts like both amethyst and pearl, so half of Steven still acts like her.
And then we have obsidian
In this chase each gem (garnet as one) has they own pair of arms because they act different and Steven has his own way to act but when he fusion with only one gem, he tries to copy how that gem acts act, in the chase of pearl, amethyst and garnet. They have two feet or legs because they all want the same, peace on earth I guess. And they see the world from two different sides. Garnet and pearl were made on homeworld while amethyst and Steven only know earth.
That leads us to why stevonnie is so perfect
They want the same, act the same and they see the world in the same way!
I donāt know if itās true but it would be nice to know if it is