Medusa from 'Battle Through the Heavens' starts as this legendary, terrifying figure—a queen whose mere glance could turn you to stone. She embodies a massive power gap for Xiao Yan early on, a wall he can't even begin to climb. That's her first role: a seemingly insurmountable obstacle and a living representation of the world's cruel, ancient rules. Her power isn't just personal; it's tied to the Snake-People Tribe's survival, which complicates everything.
Later, she becomes this bizarre, reluctant partner. The 'Heavenly Flame' incident creates a bond neither of them wanted, a forced intimacy that's equal parts antagonism and weird, profound connection. She shifts from a pure antagonist to a conflicted ally. Her pregnancy with Xiao Yan's child locks them together irrevocably, turning her personal vendetta into a shared parental and survival duty.
Honestly, I think her most crucial function is forcing Xiao Yan to grow up. Dealing with her isn't about winning a fight; it's about navigating responsibility, obligation, and messy emotional ties that transcend simple friendship or enmity. She's the catalyst that moves him from a lone wolf seeking revenge into someone who has to consider legacy, family, and the consequences of his power on a much larger scale. The main conflict evolves partly because of her presence, becoming less about straightforward battles and more about protecting a fragile, unconventional unit.