Interactions between Aspects and Void
Thinking about many lore related things, Targon came, as it is right now quite undeveloped in general, we don't know that much about aspects or why they are fighting against each other right now.
I feel that if a rogue aspect existed, one that hated the rest of them so much it would outright go against them, it wouldn't take the body of a worthy man/woman that managed to climb Mount Targon, but the direct enemy of the Aspects, a high grade Voidborn.
We don't really know if that's possible, aspects seem to be able to take over a body without any traces of coscience left, but could they really overtake a Voidborn? Would they get lost in the madness of the Void if they tried? Or would it mark the beginning of one of the strongest and most horrendous beings ever created in Runeterra?
theory incoming). Just because there is disagreement between two sides that doesn't mean automatically the' rogue Targonian' would resort to the Void, this doesn't make them a rogue but rather straight up evil.