>>112688466Lavabending being the result of a fire nation parent is not confirmed. Though that does remind me of something I found weird about lavabending:
Every other advanced bending style came from people living among that element. Ice bending comes from regions with ice, metalbending proliferated as people lived among metal, and electricitybending became common as electricity became a part of everyday life.
Lavabending isn't a part of any of that.
