Mithra is just... a mass of gears. It's not humanoid, or anthropomorphic in any way. It's a big ole mass of gears that can fundamentally alter the fabric of reality, because it's the Primal Beast of promises, and any pact you make with it must be fulfilled. To the point that it can do a lot of reality-breaking things. I love it as a concept and I love its lore and I love that it's just gears. That's such a perfect way to represent a Primal Beast that is ultimately neutral and impassive to what it does.